Transmission Failure Message

[enriquer88]

Hi, I own a 2007 525i , 150,000 miles. Transmission fluid was replaced 4 months ago. One morning last week I turn engine on and I get the "red signal" in the dash screen and in the center console. "Transmission failure: Gear may be engaged without pressing brakes. Drive moderately. Take to service... to be checked". I start driving to find that it does not change gears. I can shift drive forward and reverse with no problems, except a slight bump in rear. When in red light, sometimes drags really slow and then picks up. Also, same day, the ignition started to last more than 3 seconds to start engine. Any idea, before hearing from the dealer I need to replace the transmission and the ignition system? Please help...

[LVP]

Sometimes a weak battery starts to throw other modules into a fit. Have your battery tested. If it is original, just replace it. You'll need to have someone with software register it to the car though. I'd start there.

[beshannon]

Take it to someone who can properly read the codes from the error as well as check the battery

[enriquer88]

Thanks , I'll check that

[bronson75]

Necrobump, but these symptoms are exactly what I had on my '07 525xi.
Turned out to be a failing crankshaft position sensor.

Sent from my SM-G991U using Tapatalk

[NRG]

Take it to someone who can properly read the codes from the error as well as check the battery

Correct answer

[SkylineGTRB26]

IMO that sounds like you're in need of a mechatronic seals change, fresh fluid and filter.

This Service Information bulletin supersedes SI B24 01 08 dated May 2010.
designates changes to this revision
SUBJECT
ZF 6HP - Diagnosis for EGS FC 4F81
MODEL
E60, E61 with N52K or N54 and ZF 6HP19TU (6HP21) or 6HP19X TU from SOP up to 02/08
E65, E66 with N62TU or N73 and ZF 6HP26, produced from 03/05 up to 10/06
E70 (X5) with N52K and ZF 6HP19X TU (6HP21X) produced from SOP up to 02/08
E90, E91, E92, E93 with N52K or N54 and ZF 6HP19TU (6HP21) or 6HP19X TU from SOP up to
02/08
SITUATION
“Transmission warning light” is illuminated and the transmission enters failsafe mode. Fault code 4F81
(Ratio monitoring, clutch A), in some cases combined with the subsequent faults 507B/507C (Parking
gear sensor implausible signal) or 507D (Parking gear incorrectly disengaged), are stored in the EGS
control module.
CAUSE
Possible causes:
a. Low transmission fluid level; or
b. Internal transmission pressure leak caused by a defective adapter seal (rectangular) between the
transmission housing and the Mechatronic.
CORRECTION
Follow the procedure below:
1. Check the transmission fluid level and top up, if needed, using transmission fluid Shell M-1375.4
(P/N 83 22 0 142 516). For the filling procedure, refer to TIS RA 00 11 500.
2. Clear the EGS code fault memory and test-drive the vehicle after the transmission fluid level has
been corrected. If the fault codes listed above do not return again after the test-drive, release the
vehicle to the customer.
3. If the initial transmission fluid level was correct, or the fault codes listed above returned after
topping up and test-driving, remove the transmission’s Mechatronic and check its adapter seal
(black, rectangular shaped) for cracks. Refer to REP 24 34 561 for instructions on removal and
reinstallation of the Mechatronic. IMPORTANT:
SI B24 01 08
Automatic Transmission
October 2010
Technical Service
Load Graphics
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IMPORTANT:
Prior to the transmission oil pan removal, drain and save the long-fill transmission fluid.
7. After repair, the EGS adaption values must be cleared using the following path in ISTA/D:
From the main menu, go to Vehicle Test and choose EGS from the control unit tree (the EGS box
will change color from green to blue).
Open the Control Unit Function.
Select Component Activation and then Reset/Learn Values.
From the menu, select Reset all Adaption Values, and then click on Activate Component.
8. If the internal Mechatronic adapter seal does not exhibit any signs of damage, contact Automatic
Transmission Enhanced Technical Support (TeileClearing) for further diagnostic instructions.
Submit the “regular technical support” PuMA case, referencing SI B24 01 08 in its title.
[GRUSB2408-01.JPG]
4. If the Mechatronic adapter seal (rectangular) (1) is found
to be defective (cracks, seal damage, etc.), replace it with
the new part.
5. Reinstall the Mechatronic and an oil pan, using a new oil
pan gasket, a new Mechatronic sealing sleeve (round),
and a new drain plug. The oil pan should NOT be
replaced.
6. Fill and adjust the transmission fluid, using the
previously saved Shell M-1375.4 (P/N 83 22 0 142 516).
For the filling procedure, refer to REP 00 11 500
[GRUSB2408-05.JPG]
Important:
Make sure to push the sealing sleeve firmly into the housing
assembly before closing the white locking tab of the
Mechatronic.
To ease the sleeve installation, use some lubrication (e.g.,
transmission fluid) on both sleeve’s o-rings.
[GRUSB2408-04.JPG]
After installation, the correct distance between the transmission
harness connector and the housing surface (B) should not
exceed 3 mm.
In case the sealing sleeve is not inserted correctly, an
intermittent connection problem between the Mechatronic and
the vehicle harness connector will occur, resulting in various
EGS communication faults (e.g., FC 5079 “Serial wire message
missing”; FC 507A “Serial line signal plausibility”); “Gearbox
Emergency Program” light illumination; and the transmission
entering failsafe mode.
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PARTS INFORMATION
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle/SAV Limited Warranty as applicable, or the
Certified Pre-Owned Limited Warranty for the repair of cause (b) only.
* Main Work – Only one main labor operation (ending with 000-499) may appear on any claim or
group of claims (warranty, maintenance or campaigns) that are generated from the same repair visit.
All other labor operations on the same line or other lines must be claimed using plus code labor
operations (KSD2 labor operations that have a (+) prefix and the last three digits are 500 or a higher
number).
Part Number Description Quantity
24 34 7 588 727 Mechatronic adapter seal (rectangular) for 6HP26 1
24 34 7 588 724 Mechatronic adapter seal (rectangular) for 6HP19TU/19XTU 1
24 34 7 588 725 Mechatronic sealing sleeve (round) 1
24 11 7 520 712 Oil pan gasket for 6HP26 1
24 11 7 571 235 Oil pan gasket for 6HP19TU/19X TU 1
24 11 7 520 713 Drain plug 1
Defect Code: 24 00 30 66 00
Labor Operation: Labor Allowance: Description:
00 00 006* Refer to KSD2
24 34 561+ Refer to KSD2
Sublet 4
Sublet 4 Topping off
transmission fluid with
Shell M-1375.4
$4.00
[ Copyright © 2010 BMW of North America, LLC ]
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