The engine crank but it does not start

**Gejoe** · 06-11-2018, 03:23 PM

Hello,
I have a problem that now lasts 7 months,
I have a 2004 E46 325xi with an M54 engine
I drove quietly when I saw the light check engine light up, then what was expected to see the mechanic in the following week I did not pay much attention, I do not use the car too much more so here are 4 or 5 days after I stopped on a red light and when to leave, nothing! so then that it is manual, I thought of a bad maneuver, so I tried again started, it started but no reaction when I accelerated then the engine stopped.

I went to a mechanic who told me that he did not find the signal from the computer but in addition it is zero in programming,
So then I'm doing pretty well in IT I decided to do it myself and then it did not look complicated
I have:
- Buy a DME MS43 (already replacing the DME I could see that the temperature indicator worked)

Then it started, I decided to move the car because it was a long time since it was parked, everything went well and I stopped the engine.
So I tried to turn it back on but nothing, it was the same thing before the change of the DME box but unlike I could see the temperature so the DME works; everything became complicated right now.

I went to read here and there on the internet, we talked about the PMH and AAC sensors, so I decided to change them

- AAC and PMH sensor replaced but no solution, the car still does not start

So so disappointed that I dropped for a moment and then a day through YouTube, I saw a person solve the problem by synchronizing the DME and EWS with BMW Scanner,
I ordered it and once arrived, after installation to the pc, I started the scan and finally press to read DME EWS sync code (just that) and I tried to start (it started) then, I decided to go out for a ride, so far everything is going well, back home I stop the engine and guess what? it will not start anymore!

I left a few days and I think it starts but with the same symptom, once you stop the engine nothing, it does not start.
(in all cases the engine runs but does not start)

I thought it could be the relay of the fuel pre-pump, I changed but still nothing, it does not start.

I scanned again with BMW Scanner, I had that

# ERRORS DETAILS - DTC (hex) / PARAM (hex)
-------------------------------------------------- -------------------------------------------------- -----------------------
DME -> 00 / E4 - Error number 00
Shadow-memory:
00 / E4 - Error number 00
5A / 12 - Exhaust temperature before catalyst, bank 1, signal line, short circuit to negative
5B / 12 - Exhaust temperature before catalyst, bank 2, signal line, short circuit to negative
5D / 12 - Exhaust temperature after catalyst, bank 2, signal line, short circuit to negative

EWS -> Shadow-memory:
0A / 26 - Error number 0A
2A / 33 - Error number 2A

ABS -> 6C / FF - SN-control

SRS -> Shadow-memory:
50/20 - Power supply, undervoltage

IKE -> F5 / 88 - No CAN message (ASC1)
F9 / 88 - No CAN message (ASC3)
BF / 78 - Internal fault, EEPROM checksum 1 (BMW-section), incorrect / incomplete coding

Another thing, I noticed that the DME wine is different from that of the EWS since the change of the DME (but it had even begun) the seller of the DME tells me that the wine is not a problem on this model ( E46 2004 engine M54 DME MS43) but earlier wine cluster and ews

It does not start or very rarely when it wants and I do not know what to do.
Help me please

**legoman67** · 06-12-2018, 02:08 AM

have you checked fuel pressure? Sounds like you are way overthinking a simple issue. You dont have any current EWS/immobilizer related codes in that list, so there is likely no issue with that system. Also that error 00 tells me perhaps the DME you have has the EWS deleted.

The DME's in these cars almost never fail unless they are subjected to external elements(water, fire, etc).

**Raddee** · 06-12-2018, 04:56 AM

Put your old DME back in and check basics: fuel pressure and sparks. Also, scan your old DME with INPA to see why you got the CEL in the first place.

**Gejoe** · 06-13-2018, 02:25 AM

Thank you for the answer;
No, the ews is not removed, I can access it works without problems, I have with me the old DME, which does not respond, once it plugs the temperature indicator goes up to the max it is who indicates that he is dead. How do I do for fuel pressure?

**Gejoe** · 06-13-2018, 02:26 AM

Originally Posted by legoman67

have you checked fuel pressure? Sounds like you are way overthinking a simple issue. You dont have any current EWS/immobilizer related codes in that list, so there is likely no issue with that system. Also that error 00 tells me perhaps the DME you have has the EWS deleted.

The DME's in these cars almost never fail unless they are subjected to external elements(water, fire, etc).

Thank you for the answer;
No, the ews is not removed, I can access it works without problems, I have with me the old DME, which does not respond, once it plugs the temperature indicator goes up to the max it is who indicates that he is dead. How do I do for fuel pressure?

**Gejoe** · 06-13-2018, 02:32 AM

Originally Posted by Raddee

Put your old DME back in and check basics: fuel pressure and sparks. Also, scan your old DME with INPA to see why you got the CEL in the first place.

Thank you for the answer,
The old one (DME) does not work anymore, that's why I bought another one, because then it did not answer according to the mechanic, could I scan anyway? and what is CEL?

**Gejoe** · 06-13-2018, 02:38 AM

Here is the diagnosis the day the car started
---------------------------------------------------------------------------------------------------------------------------
BMW Scanner v1.4.0.7 (14.01.2009) - P.A.Soft, 2008 HW: V144Bn9 Time: 17:52:13 2018-05-26
---------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 00 12 60 05/02 237230 km WBAEP51060PF08347 FFFFFF MS43.0 M54 (EWS3)
EWS -> 9.127.086 05 02 81 81 07 42/06 237236 km WBAEU33474PF61271 000000 EWS4

# SCAN START
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 00 12 60 05/02 237230 km WBAEP51060PF08347 FFFFFF MS43.0 M54 (EWS3)
EWS -> 9.127.086 05 02 81 81 07 42/06 237236 km WBAEU33474PF61271 000000 EWS4
ABS -> 6.762.115 51 03 19 14 3C 42/03 - - - DSC5.7
LEW -> 6.760.232 04 04 01 30 60 36/03 - PF61271 001271 LWS5.1B
A/C -> 4.126.707 36 18 17 33 0E 42/03 - - 001271 IHKA E46 PU 03/2003
SRS -> 6.933.238 10 33 32 09 14 41/03 - PF61271 000000 MRS4
IKE -> 6.932.894 29 35 08 54 13 40/03 237236 km PF61271 02FFFF M35080 - 2 (E46R)
LCM -> 6.936.828 24 36 35 30 14 42/03 237200 km PF61271 3D0000 HC912 - 4 (LSZ2)
ZKE -> 6.932.369 10 31 04 41 13 37/03 - - 011271 ZKE5
MFL -> 0.000.000 01 11 00 03 78 00/00 - - - MFL2
AIC -> 6.923.954 40 32 02 10 00 42/03 - - 001271 RLS
RAD -> 6.927.902 41 40 01 35 11 39/03 - - 001271 Radio ZIS/BM/MIR
SZM -> 6.925.527 02 04 20 20 78 36/03 - - - SZM E46
SHD -> 6.928.756 B4 19 04 04 78 42/03 - - FF1271 SHD E46/R40/R50

# USER INFO FIELDS
---------------------------------------------------------------------------------------------------------------------------
Unit Date VIN Odometer Assembly Software Service Dealer Tester Program ver.
---------------------------------------------------------------------------------------------------------------------------
DME -> 09.02.02 WBAEP51060PF08347 0 km 7.522.332 7.522.333 7.503.718 012321 42324 -

# ERRORS IN UNITS
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW ERRORS / SHADOW-MEMORY
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 11 error / 14 errors
EWS -> 9.127.086 05 02 3 errors / 2 errors
ABS -> 6.762.115 51 03 3 errors
LEW -> 6.760.232 04 04 no errors
A/C -> 4.126.707 36 18 no errors
SRS -> 6.933.238 10 33 1 error / 1 error
IKE -> 6.932.894 29 35 5 errors
LCM -> 6.936.828 24 36 no errors / no errors
ZKE -> 6.932.369 10 31 1 error / 1 error
MFL -> 0.000.000 01 11 no data
AIC -> 6.923.954 40 32 no errors
RAD -> 6.927.902 41 40 no errors
SZM -> 6.925.527 02 04 no errors / 1 error
SHD -> 6.928.756 B4 19 no errors

# ERRORS DETAILS - DTC(hex)/PARAM(hex)
---------------------------------------------------------------------------------------------------------------------------
DME -> 00/E4 - Error number 00
1B/B4 - Idle speed control valve, closing coil, open circuit
71/B2 - Signal, engine throttle sensor, potentiometer 2, short circuit to negative or open circuit
70/B2 - Signal, engine throttle sensor, potentiometer 1, short circuit to negative
15/B4 - VANOS solenoid valve, inlet, open circuit
35/B4 - Idle speed control valve, opening coil, open circuit
13/B4 - VANOS solenoid valve, exhaust, open circuit
44/B4 - Solenoid valve, tank ventilation, open circuit
3E/B2 - Solenoid valve, secondary air, short circuit to negative or open circuit
7B/B2 - Signal, characteristic map cooling, short circuit to negative or open circuit
23/72 - Secondary air pump relay, short circuit to negative or open circuit
Shadow-memory:
00/E4 - Error number 00
1B/B4 - Idle speed control valve, closing coil, open circuit
71/B2 - Signal, engine throttle sensor, potentiometer 2, short circuit to negative or open circuit
70/B2 - Signal, engine throttle sensor, potentiometer 1, short circuit to negative
15/B4 - VANOS solenoid valve, inlet, open circuit
35/B4 - Idle speed control valve, opening coil, open circuit
13/B4 - VANOS solenoid valve, exhaust, open circuit
44/B4 - Solenoid valve, tank ventilation, open circuit
3E/B2 - Solenoid valve, secondary air, short circuit to negative or open circuit
7B/B2 - Signal, characteristic map cooling, short circuit to negative or open circuit
5A/12 - Exhaust temperature before catalyst, bank 1, signal line, short circuit to negative
5B/12 - Exhaust temperature before catalyst, bank 2, signal line, short circuit to negative
5D/12 - Exhaust temperature after catalyst, bank 2, signal line, short circuit to negative
23/72 - Secondary air pump relay, short circuit to negative or open circuit

EWS -> FF/02 - General reset
FF/FF - General reset
0F/01 - Power on reset
Shadow-memory:
2A/3F - Error number 2A
0A/2B - Error number 0A

ABS -> 76/D0 - Status DME internal error
6C/FF - SN-control
5A/FF - Temporary system deactivation

SRS -> 50/20 - Power supply, undervoltage
Shadow-memory:
50/20 - Power supply, undervoltage

IKE -> C7/81 - Tank sensor 1
F7/88 - No CAN message (DME2)
F8/88 - No CAN message (DME4)
F4/88 - No CAN message
D7/81 - Tank sensor 2

ZKE -> 3D/03 - Central locking system: Short circuit or Open circuit at Motor Tailgate
Shadow-memory:
90/25 - Battery Voltage: Open circuit

SZM -> Shadow-memory:
05/24 - Seat heating Lower voltage recognised

# SCAN END
---------------------------------------------------------------------------------------------------------------------------

# ADDITIONAL INFO
---------------------------------------------------------------------------------------------------------------------------
DME/EWS sync code:
C942

---------------------------------------------------------------------------------------------------------------------------

**Gejoe** · 06-13-2018, 02:44 AM

After I cleared the errors

---------------------------------------------------------------------------------------------------------------------------
BMW Scanner v1.4.0.7 (14.01.2009) - P.A.Soft, 2008 HW: V144Bn9 Time: 19:29:49 2018-05-26
---------------------------------------------------------------------------------------------------------------------------

FA coding : /-------- IKE --------\ /-------- LCM --------\
Chassis : E46 E46
Model : 325xi 325xi
Type key : EU33 EU33
Engine : M54B25 M54B25
Gearbox : Manual Manual
VIN : PF61271 PF61271
Time criterion : 0903 0903
Paint code : 0A08 0A08
Upholstery code : K4SW K4SW
FA-stream : 024194139545BF9754D3 024194139545BF9754D3
421418AD4CF741041041 421418AD4CF741041041
04104104104104104104 04104104104104104104
1042118E14904D245049 1042118E14904D245049
44125194976534914D55 44125194976534914D55
14413511454511516554 14413511454511516554
5D351951465555049549 5D351951465555049549
05524554925535155185 05524554925535155185
55416515595416591599 55416515595416591599
4984586124D84D261361 4984586124D84D261361
85156154D85D66195994 85156154D85D66195994
556525594966594800 556525594966594800

---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 00 12 60 05/02 237230 km WBAEP51060PF08347 FFFFFF MS43.0 M54 (EWS3)

# SCAN START
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
EWS -> 9.127.086 05 02 81 81 07 42/06 237241 km WBAEU33474PF61271 000000 EWS4
ABS -> 6.762.115 51 03 19 14 3C 42/03 - - - DSC5.7
LEW -> 6.760.232 04 04 01 30 60 36/03 - PF61271 001271 LWS5.1B
A/C -> 4.126.707 36 18 17 33 0E 42/03 - - 001271 IHKA E46 PU 03/2003
SRS -> 6.933.238 10 33 32 09 14 41/03 - PF61271 000000 MRS4
IKE -> 6.932.894 29 35 08 54 13 40/03 237241 km PF61271 02FFFF M35080 - 2 (E46R)
LCM -> 6.936.828 24 36 35 30 14 42/03 237200 km PF61271 3D0000 HC912 - 4 (LSZ2)
ZKE -> 6.932.369 10 31 04 41 13 37/03 - - 011271 ZKE5
MFL -> 0.000.000 01 11 00 03 78 00/00 - - - MFL2
AIC -> 6.923.954 40 32 02 10 00 42/03 - - 001271 RLS
RAD -> 6.927.902 41 40 01 35 11 39/03 - - 001271 Radio ZIS/BM/MIR
SZM -> 6.925.527 02 04 20 20 78 36/03 - - - SZM E46
SHD -> 6.928.756 B4 19 04 04 78 42/03 - - FF1271 SHD E46/R40/R50

# ERRORS IN UNITS
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW ERRORS / SHADOW-MEMORY
---------------------------------------------------------------------------------------------------------------------------
EWS -> 9.127.086 05 02 no errors / 1 error
ABS -> 6.762.115 51 03 3 errors
LEW -> 6.760.232 04 04 no errors
A/C -> 4.126.707 36 18 no errors
SRS -> 6.933.238 10 33 1 error / 1 error
IKE -> 6.932.894 29 35 5 errors
LCM -> 6.936.828 24 36 no errors / no errors
ZKE -> 6.932.369 10 31 1 error / 1 error
MFL -> 0.000.000 01 11 no data
AIC -> 6.923.954 40 32 no errors
RAD -> 6.927.902 41 40 no errors
SZM -> 6.925.527 02 04 no errors / 1 error
SHD -> 6.928.756 B4 19 no errors

# ERRORS DETAILS - DTC(hex)/PARAM(hex)
---------------------------------------------------------------------------------------------------------------------------
EWS -> Shadow-memory:
2A/0A - Error number 2A

ABS -> 76/BC - Status DME internal error
6C/FE - SN-control
5A/EC - Temporary system deactivation

SRS -> 50/20 - Power supply, undervoltage
Shadow-memory:
50/20 - Power supply, undervoltage

IKE -> C7/81 - Tank sensor 1
F7/88 - No CAN message (DME2)
F8/88 - No CAN message (DME4)
F4/88 - No CAN message
D7/81 - Tank sensor 2

ZKE -> 3D/04 - Central locking system: Short circuit or Open circuit at Motor Tailgate
Shadow-memory:
90/25 - Battery Voltage: Open circuit

SZM -> Shadow-memory:
05/04 - Seat heating Lower voltage recognised

# SCAN END
---------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
ZKE -> 6.932.369 10 31 04 41 13 37/03 - - 011271 ZKE5
IKE -> 6.932.894 29 35 08 54 13 40/03 237241 km PF61271 02FFFF M35080 - 2 (E46R)
EWS -> 9.127.086 05 02 81 81 07 42/06 237241 km WBAEU33474PF61271 000000 EWS4

**Gejoe** · 06-13-2018, 02:50 AM

And here's when it does not start
---------------------------------------------------------------------------------------------------------------------------
BMW Scanner v1.4.0.1012 - P.A.Soft HW: V144Bn9 Time: 17:24:36 2018-06-09
---------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 00 12 60 05/02 237240 km WBAEP51060PF08347 011271 MS43.0 M54 (EWS3)
EWS -> 9.127.086 05 02 81 81 07 42/06 237241 km WBAEU33474PF61271 011271 EWS4
ZKE -> 6.932.369 10 31 04 41 13 37/03 - - 011271 ZKE5
IKE -> 6.932.894 29 35 08 54 13 40/03 237241 km PF61271 02FFFF M35080 - 2 (E46R)

FA coding : /-------- IKE --------\ /-------- LCM --------\
Chassis : E46 E46
Model : 325xi 325xi
Type key : EU33 EU33
Engine : M54B25 M54B25
Gearbox : Manual Manual
VIN : PF61271 PF61271
Time criterion : 0903 0903
Paint code : 0A08 0A08
Upholstery code : K4SW K4SW
FA-stream : 024194139545BF9754D3 024194139545BF9754D3
421418AD4CF741041041 421418AD4CF741041041
04104104104104104104 04104104104104104104
1042118E14904D245049 1042118E14904D245049
44125194976534914D55 44125194976534914D55
14413511454511516554 14413511454511516554
5D351951465555049549 5D351951465555049549
05524554925535155185 05524554925535155185
55416515595416591599 55416515595416591599
4984586124D84D261361 4984586124D84D261361
85156154D85D66195994 85156154D85D66195994
556525594966594800 556525594966594800

# SCAN START
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW CI DI BI/VI Date Odometer VIN ADFG Algorithm
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 00 12 60 05/02 237240 km WBAEP51060PF08347 FFFFFF MS43.0 M54 (EWS3)
EWS -> 9.127.086 05 02 81 81 07 42/06 237241 km WBAEU33474PF61271 FFFFFF EWS4
ABS -> 6.762.115 51 03 19 14 3C 42/03 - - - DSC5.7
LEW -> 6.760.232 04 04 01 30 60 36/03 - PF61271 001271 LWS5.1B
A/C -> 4.126.707 36 18 17 33 0E 42/03 - - 001271 IHKA E46 PU 03/2003
SRS -> 6.933.238 10 33 32 09 14 41/03 - PF61271 000000 MRS4
IKE -> 6.932.894 29 35 08 54 13 40/03 237241 km PF61271 02FFFF M35080 - 2 (E46R)
LCM -> 6.936.828 24 36 35 30 14 42/03 237200 km PF61271 3D0000 HC912 - 4 (LSZ2)
ZKE -> 6.932.369 10 31 04 41 13 37/03 - - 011271 ZKE5
MFL -> 0.000.000 01 11 00 03 78 00/00 - - - MFL2
AIC -> 6.923.954 40 32 02 10 00 42/03 - - 001271 RLS

# USER INFO FIELDS
---------------------------------------------------------------------------------------------------------------------------
Unit Date VIN Odometer Assembly Software Service Dealer Tester Program ver.
---------------------------------------------------------------------------------------------------------------------------
DME -> 09.02.02 WBAEP51060PF08347 0 km 7.522.332 7.522.333 7.503.718 012321 42324 -

# ERRORS IN UNITS
---------------------------------------------------------------------------------------------------------------------------
Unit BMWTNR HW SW-FSW ERRORS / SHADOW-MEMORY
---------------------------------------------------------------------------------------------------------------------------
DME -> 7.519.308 19 50 1 error / 4 errors
EWS -> 9.127.086 05 02 no errors / 2 errors
ABS -> 6.762.115 51 03 1 error
LEW -> 6.760.232 04 04 no errors
A/C -> 4.126.707 36 18 no errors
SRS -> 6.933.238 10 33 no errors / 1 error
IKE -> 6.932.894 29 35 3 errors
LCM -> 6.936.828 24 36 no errors / no errors
ZKE -> 6.932.369 10 31 no errors / no errors
MFL -> 0.000.000 01 11 no data
AIC -> 6.923.954 40 32 no errors

# ERRORS DETAILS - DTC(hex)/PARAM(hex)
---------------------------------------------------------------------------------------------------------------------------
DME -> 00/E4 - Error number 00
Shadow-memory:
00/E4 - Error number 00
5A/12 - Exhaust temperature before catalyst, bank 1, signal line, short circuit to negative
5B/12 - Exhaust temperature before catalyst, bank 2, signal line, short circuit to negative
5D/12 - Exhaust temperature after catalyst, bank 2, signal line, short circuit to negative

EWS -> Shadow-memory:
0A/26 - Error number 0A
2A/33 - Error number 2A

ABS -> 6C/FF - SN-control

SRS -> Shadow-memory:
50/20 - Power supply, undervoltage

IKE -> F5/88 - No CAN message (ASC1)
F9/88 - No CAN message (ASC3)
BF/78 - Internal fault, EEPROM checksum 1 (BMW-section), coding incorrect/incomplete

# SCAN END
---------------------------------------------------------------------------------------------------------------------------

# ADDITIONAL INFO
---------------------------------------------------------------------------------------------------------------------------
DME/EWS sync code:
C942

DME/EWS sync code:
C942

DME/EWS sync code:
C942

DME/EWS sync code:
C942

DME/EWS sync code:
C942

DME/EWS sync code:
C942

DME/EWS sync code:
C942

---------------------------------------------------------------------------------------------------------------------------

**Raddee** · 06-13-2018, 03:08 AM

I suspect the EWS is not allowing the car to start. More info here: https://www.bimmerforums.com/forum/s...-DME-to-an-E46

Either try to get the EWS module and keys that matched the DME or re-program the DME to match your original EWS; but that could be tricky. See above link for more info.

Another option I found somewhere is to de-solder and swap the EEPROM chips on both DMEs so your new DME has the settings from the old DME.

**Gejoe** · 06-13-2018, 03:46 PM

Originally Posted by Raddee

I suspect the EWS is not allowing the car to start. More info here: https://www.bimmerforums.com/forum/s...-DME-to-an-E46

Either try to get the EWS module and keys that matched the DME or re-program the DME to match your original EWS; but that could be tricky. See above link for more info.

Another option I found somewhere is to de-solder and swap the EEPROM chips on both DMEs so your new DME has the settings from the old DME.

So I have 3 options
1. Align DME EWS, to get there I will:
at. Change the (VIN) of the replaced DME to match the EWS (original) with INPA and WinFKP
b. I will align DME EWS always with INPA
2. Put the old EEPROM chip to the replaced DME
3. Buy DME EWS and Key to change the three

That's it?

**Gejoe** · 06-14-2018, 04:08 PM

Originally Posted by legoman67

have you checked fuel pressure? Sounds like you are way overthinking a simple issue. You dont have any current EWS/immobilizer related codes in that list, so there is likely no issue with that system. Also that error 00 tells me perhaps the DME you have has the EWS deleted.

The DME's in these cars almost never fail unless they are subjected to external elements(water, fire, etc).

the guy who sold me the (DME) just told me that it does not need to be synchronized, it's a DME bypass, I do not know what to think, no error message in connection with the startup, does a DME bypass have a special method to work?

**legoman67** · 06-16-2018, 05:55 PM

Originally Posted by Gejoe

the guy who sold me the (DME) just told me that it does not need to be synchronized, it's a DME bypass, I do not know what to think, no error message in connection with the startup, does a DME bypass have a special method to work?

He probably meant EWS bypass as i previously said. Thats the only possible way it would work without syncronizing. Ive also only ever seen error 00 on DME's that have had this done. You can still talk to the ews module because it is still in your car, but the DME isnt using it.

You need to step back and check the basics. You are making this much more complex then it is. Check your fuel pressure. EWS related issues will throw codes in the DME. Since you dont have these codes you dont have an EWS problem.

**Fx323i** · 06-18-2018, 03:07 PM

If the guy who sold you the DME told you that it has EWS bypassed, I would try to disconnect the EWS unit and instead I would put a 30-AMP fuse in the car-side connector to the EWS (there are only 2 pins on one edge of the connector where it can fit so you can not miss), then try to start. If it does not, try EWS-DME sync in the diagnostic system and do the test again. The problem might be, that in the DME there can be an EWS emulator installed and if the next EWS is connected, the ECU sees two EWS system active, getting two different codes on one wire, which is a huge mess. In some cases, the EWS-DME sync causes the engine to start once and the re-start is not possible then.

EDIT: Also, seeing your DTC list, it is possible that just the EWS fault code is suppressed in the DME program. This means, the EWS fault is there but not appearing in the DTC list. This is often done by changing "whatever the fault code you want to get rid of" to 0. This is why I am suspicious, because the DTC for DME is "00". Anyway, the fault code 00 as stated in the post prior to mine also is frequently seen on MS43 EWS delete mods.

If you are not too afraid, you also could read a full flash from the old DME, backup the new DME and transfer the data from old DME to it. You only would need a bunch of wires and a DC 12V/1A power supply. And of course not to be too scared.

**Gejoe** · 06-26-2018, 09:22 AM

Originally Posted by Fx323i

If the guy who sold you the DME told you that it has EWS bypassed, I would try to disconnect the EWS unit and instead I would put a 30-AMP fuse in the car-side connector to the EWS (there are only 2 pins on one edge of the connector where it can fit so you can not miss), then try to start. If it does not, try EWS-DME sync in the diagnostic system and do the test again. The problem might be, that in the DME there can be an EWS emulator installed and if the next EWS is connected, the ECU sees two EWS system active, getting two different codes on one wire, which is a huge mess. In some cases, the EWS-DME sync causes the engine to start once and the re-start is not possible then.

EDIT: Also, seeing your DTC list, it is possible that just the EWS fault code is suppressed in the DME program. This means, the EWS fault is there but not appearing in the DTC list. This is often done by changing "whatever the fault code you want to get rid of" to 0. This is why I am suspicious, because the DTC for DME is "00". Anyway, the fault code 00 as stated in the post prior to mine also is frequently seen on MS43 EWS delete mods.

If you are not too afraid, you also could read a full flash from the old DME, backup the new DME and transfer the data from old DME to it. You only would need a bunch of wires and a DC 12V/1A power supply. And of course not to be too scared.

Can you explain in detail how to disconnect ews? the guy who sold me the dme told me to take the power that comes from the switch, connect it to the ews # 1 wire and change the immobilizer fuse for 10A; the problem is that I do not understand his explanation well. Can you explain it better?

**Fx323i** · 06-26-2018, 09:43 AM

EWS3.3 Fuse.jpg
Your car has EWS3. If you unplug the connector from the EWS unit, look inside of the connector on the harness. On one side there are 2 wide pins. Take a fuse (10A, 30A, whatever) and put it in the connector to the only place where it fits - on the wide contacts. Once you take a look at the connector physically, you will know. See in the picture. Once you have plugged the fuse in the connector, try to start the car.

The only thing you do making this connection is leaving the EWS system unplugged while ignition switch is connected directly to the starter engage wire.

EDIT: Seeing the VIN in the DME I see very clearly that there is immo off done as it comes from the free files from MS43wiki. This means, the EWS delete should be done properly. If there are no fault codes, doing the trick with the 30A fuse should work. There only is one question and that is, if trying to sync EWS to DME would do any change to the program part of the DME, and this way if it would not enable the EWS again. I did not test this but if you were out of ideas, I can test it as I have a car with the very same software on my yard daily. It is a car of my colleague from work and we are testing some things on his MS43 every week so there definitely will be an opportunity to try it.

Thread: The engine crank but it does not start

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The engine crank but it does not start

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