- An incorrect transmission version is coded in control module Y3/8n4 (Fully integrated transmission control (VGS) control unit).
REMEDY
- Repeat SCN variant coding.
NOTEIf repeated attempts at SCN coding were not successful, please notify the Hotline. End of test
E2638
Engine control does not allow any torque intervention by transmission control.
Possible cause:
- Engine management
Affected functions:
- Automatic transmission Function
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Test 1: Fault in CAN communication with control unit Engine management.
1. Fault in CAN communication with control unit Engine management.
Operation number of operation texts and work units or standard texts and flat rates:27-0641WARNING
- This is not a function error of control module Y3/8n4 (Fully integrated transmission control (VGS) control unit) and does not justify
replacement.
Possible cause for the entry of this event code
- Operational fault of component Engine management
Possible measures
- Read out fault memory of control unit Engine management.
- Process displayed fault codes in control module Engine management.
End of test
E2806
Component Y3/8s1 (Selection range sensor (VGS)) is not learned.
Possible cause:
- Y3/8s1 (Selection range sensor (VGS))
Affected functions:
- Automatic transmission Function
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Test 1: Remedial action if component Y3/8s1 (Selection range sensor (VGS)) is not taught in
1. Remedial action if component Y3/8s1 (Selection range sensor (VGS)) is not taught in
Customer complaint
- It is not possible to teach in the selection range sensor after removing/installing component Y3/8 (Electric control unit (VGS)).An error
message occurs during initial startup with STAR DIAGNOSIS, although the shift rod is adjusted correctly.
- The error message reads: the prerequisites are not fulfilled or the peripherals are not operational.
Cause
- When installing component Y3/8 (Electric control unit (VGS)), the retaining bolt of the detent plate was not inserted into the plastic bracket of
the selector range valve.
Remedy
- Remove component Y3/8 (Electric control unit (VGS)).
- Install component Y3/8 (Electric control unit (VGS)), ensuring that the retaining bolt is inserted into the plastic bracket of the selector range
valve.
- Teach in component Y3/8s1 (Selection range sensor (VGS)).
