s-edc problem

[danypop]

hallo. a problem with my 728i with s-edc suspension.
in the factory 728 had s-edc + sls suspension, but the former owner changed the rear dampers with some new ones but without sdec.eu we put back dampers with s-edc, but without sls, and now the suspension is very durable ,not working. can you help me with some advice, what can I do? thank you.

[Qsilver7]

The EDC suspension is electrical...all of the dampers have electrical connectors going to them and are under the control of an EDC control module....which constantly receives data from a couple of acceleration sensors and steering angle sensor. Make sure all of those things are in place and in working order.

{Depending on model/model year...the EDC control module may be up front behind the glovebox (on LHD e38s)...and not in the rear trunk area}

The SLS (rear self leveling suspension) on the e38 is a hydraulic/mechnical system and the rear accumulators actually do the heavy lifting of the rear suspension...with the coil springs and shocks performing an ancillary function. If you replace the SLS suspension...then different types of shocks and coil springs are required since the hydraulic system is no longer supporting the rear of the car.

[danypop]

what testing software should I need?

[danypop]

I solved. EDC computer was defective!
Thanks

[danypop]

Hello again. I changed the EDC module, I made 30 km across the city and 70 km outside, and this module broke down. Is there a problem with the machine that fails the EDC modules?

[Timm]

Without diagnostics (INPA will do the job) you will not know if the module is the problem - or something else in the system. The system is quite complicated with a number of external sensors - here's the full information:

http://www.meeknet.co.uk/e38/EDC_III_Plus.pdf

[danypop]

I want to fix the EDC module! do I find somewhere a schema with the value of the pieces in the module to check them? thank you nicely.

[Timm]

There are no diagrams for any of the modules that I have ever seen. How do you know that the module is the problem?

[danypop]

this circuit circulates the current in both directions

[Zbyszek82]

Hello
I have problem with EDC in bmw e38.
Somebody know what this error mean?

[a777fan]

Sorry. That image resolution is too low to be readable.

What error are your getting?


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[Zbyszek82]

You must klik on foto.
Me suspension is very hard now.

[a777fan]

This is what I see when I click on the photo you uploaded:




Anyway, thanks for the new picture. I had the same error. I replaced the EDC control unit and that fixed my issue. YMMV.

[Zbyszek82]

Issue solved.
It was a damaged shock absorber. After regeneration everything is ok.

[a777fan]

Nice! Hows the ride? Loving it?


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[Thresher]

Issue solved.
It was a damaged shock absorber. After regeneration everything is ok.

Which one? I ask, because I have seen a similar error. Your picture mentioned error code 02 24, I have error code 01 24:

E R R O R M E M O R Y R E P O R T
-------------------------------------
Date: 05/18/21 16:48:52
ECU: EDC4
JobStatus: OKAY
Variant: EDC4
-------------------------------------------------------------
RESULT: 3 errors in error memory !
-------------------------------------------------------------
83 Vcoil: Vcoil different to PWM -> control unit defective
Error frequency : 1
Errorcode: 08
-------------------------------------------------------------
105 Unknown error location
Error frequency : 1
Errorcode: 01 24
-------------------------------------------------------------
137 Unknown error location
Error frequency : 1
Errorcode: 02 82
================================================== ===========

Due to the error message about the control unit being defective, I have sourced a replacement control unit. I just haven't been able to get time to work with my mechanic to get it coded properly and installed.

[a777fan]

Which one? I ask, because I have seen a similar error. Your picture mentioned error code 02 24, I have error code 01 24:

E R R O R M E M O R Y R E P O R T
-------------------------------------
Date: 05/18/21 16:48:52
ECU: EDC4
JobStatus: OKAY
Variant: EDC4
-------------------------------------------------------------
RESULT: 3 errors in error memory !
-------------------------------------------------------------
83 Vcoil: Vcoil different to PWM -> control unit defective
Error frequency : 1
Errorcode: 08
-------------------------------------------------------------
105 Unknown error location
Error frequency : 1
Errorcode: 01 24
-------------------------------------------------------------
137 Unknown error location
Error frequency : 1
Errorcode: 02 82
================================================== ===========

Due to the error message about the control unit being defective, I have sourced a replacement control unit. I just haven't been able to get time to work with my mechanic to get it coded properly and installed.

You should be able to just pop the new unit in as is without coding to test and see your code 83 goes away.

The coding only changes the damping characteristic curves.

It will take you about 15 minutes to do.


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[Zbyszek82]

Yes. Now it's a nice ride.

[Zbyszek82]

Nice! Hows the ride? Loving it?

Yes. Now it's a nice ride.

[Zbyszek82]

Which one? I ask, because I have seen a similar error. Your picture mentioned error code 02 24, I have error code 01 24:

E R R O R M E M O R Y R E P O R T
-------------------------------------
Date: 05/18/21 16:48:52
ECU: EDC4
JobStatus: OKAY
Variant: EDC4
-------------------------------------------------------------
RESULT: 3 errors in error memory !
-------------------------------------------------------------
83 Vcoil: Vcoil different to PWM -> control unit defective
Error frequency : 1
Errorcode: 08
-------------------------------------------------------------
105 Unknown error location
Error frequency : 1
Errorcode: 01 24
-------------------------------------------------------------
137 Unknown error location
Error frequency : 1
Errorcode: 02 82
================================================== ===========

Due to the error message about the control unit being defective, I have sourced a replacement control unit. I just haven't been able to get time to work with my mechanic to get it coded properly and installed.

The most important thing is to check the shock absorber resistances. This is measured on the plug from them. There are 3 pins: - 2 for coils (soft, medium) - 1 common (minus) There must be a transition between them. If there is no one, EDC crashes errors.

[Zbyszek82]

Driving is very pleasant now

The most important thing is to check the shock absorber resistances.
This is measured on the plug from them. There are 3 pins:
- 2 for coils (soft, medium)
- 1 common (minus)
There must be a transition between them. If there is no one, EDC crashes errors.

[Thresher]

You should be able to just pop the new unit in as is without coding to test and see your code 83 goes away.

The coding only changes the damping characteristic curves.

It will take you about 15 minutes to do.

Interesting. I believe the E38 rear suspension came in SLS, SLS+EDC, and neither SLS or EDC variations; I guess I was a bit dense in thinking EDC was therefore a configurable option for the rear; but it makes sense that if EDC is present, it would be both on front and rear and again if EDC is present, then the control module would be there. Makes much more sense to me now. :-) OK, cool, I will find time to swap the module this week and see what happens. Think it should be mostly straight-forward as the module is believed to be located behind the glove box area on my 2001 car.

[a777fan]

Interesting. I believe the E38 rear suspension came in SLS, SLS+EDC, and neither SLS or EDC variations; I guess I was a bit dense in thinking EDC was therefore a configurable option for the rear; but it makes sense that if EDC is present, it would be both on front and rear and again if EDC is present, then the control module would be there. Makes much more sense to me now. :-) OK, cool, I will find time to swap the module this week and see what happens. Think it should be mostly straight-forward as the module is believed to be located behind the glove box area on my 2001 car.

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[a777fan]

Yes. Now it's a nice ride.

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