Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
A/T - Failsafe Mode/EGS Fault Code CF33 Stored
2008 BMW M5 (E60) V10-5.0L (S85)SECTION A/T - Failsafe Mode/EGS Fault Code CF33 Stored
SI B 24 10 07
Automatic Transmission
May 2008
Technical Service
This Service Information bulletin supersedes SI B24 10 07 dated April 2007.
[NEW] designates changes to this revision
SUBJECT
The Transmission is in "Failsafe" mode with EGS Fault CF33 Stored
MODEL
E70 from SOP to 8/2007
E60, E61 produced 2/2007 to 8/2007
E90, E91, E92, E93 produced from 8/2006 to 8/2007
All with either the ZF 6HP19TU or 6HP26TU automatic transmissions
SITUATION
[NEW]After control module replacement, complete vehicle reprogramming, or after clearing DME adaptation values, the transmission is in "failsafe" mode with fault code CF33 (No message from engine management stored in the EGS module). The fault entry cannot be cleared.
CAUSE
EGS software application
CORRECTION
Do not replace any parts.
Using DIS 49.0 and higher run a "Short test" and Perform the following test module:
Reset learning functions / S2460_GSLFR_TU - available using the following diagnostic path:
Service Functions / Transmission Control / Calibrations / Reset leaning functions
Afterwards turn the ignition off / lock vehicle / let vehicle enter sleep mode
It is now possible to clear the fault.
This problem is planned to be corrected with August 2007 and later production vehicles equipped with these ZF transmissions.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Defect Code: Refer to KSD
Labor Operation: Refer to KSD
Labor Allowance: Refer to KSD
Disclaimer
Automatic Transmission
May 2008
Technical Service
This Service Information bulletin supersedes SI B24 10 07 dated April 2007.
[NEW] designates changes to this revision
SUBJECT
The Transmission is in "Failsafe" mode with EGS Fault CF33 Stored
MODEL
E70 from SOP to 8/2007
E60, E61 produced 2/2007 to 8/2007
E90, E91, E92, E93 produced from 8/2006 to 8/2007
All with either the ZF 6HP19TU or 6HP26TU automatic transmissions
SITUATION
[NEW]After control module replacement, complete vehicle reprogramming, or after clearing DME adaptation values, the transmission is in "failsafe" mode with fault code CF33 (No message from engine management stored in the EGS module). The fault entry cannot be cleared.
CAUSE
EGS software application
CORRECTION
Do not replace any parts.
Using DIS 49.0 and higher run a "Short test" and Perform the following test module:
Reset learning functions / S2460_GSLFR_TU - available using the following diagnostic path:
Service Functions / Transmission Control / Calibrations / Reset leaning functions
Afterwards turn the ignition off / lock vehicle / let vehicle enter sleep mode
It is now possible to clear the fault.
This problem is planned to be corrected with August 2007 and later production vehicles equipped with these ZF transmissions.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
Defect Code: Refer to KSD
Labor Operation: Refer to KSD
Labor Allowance: Refer to KSD
Disclaimer
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.