LI91.12-P-073742

Model Series 167: Seats Malfunction In 2nd or 3rd Seat Row
Topic number
LI91.12-P-073742
Version
3
Function group
91.12 - Rear seats
Date
4/13/22
Validity
BR167
Reason for change
Update to Remedy
Complaint
•
•
•
•
Seats cannot be adjusted
Seats cannot be folded
Seats in the 2nd seat row cannot be locked or unlocked
Normalization cannot be performed in its entirety using XENTRY
Cause
Under analysis
Remedy
*Make sure a battery charger is connected to vehicle while performing all testing*
Please perform the following checks that help to resolve most concerns:
#1 - Make sure seat control units have latest software installed on them.
#2 - For seat folding concerns, pay careful attention to the lock mechanism and ensure it is fully releasing. If the locking mechanism is short-stroking, please replace associated Bowden cables.
#2a - Seat folding concerns can also be related to binding of the seat frame. To remedy, loosen torque off bolts holding seat frame to car. Shift seat frame and ensure there is no binding. Re-torque bolts securing seat frame to car and
re-test.
#3 - For seats showing unlocked in the IC when fully locked, please check seat frame carefully for small microswitches that can be damaged.
#4 - For seats moving forward but not folding upward (2nd row), please ensure the 4 small clips are still located on the
inner and outer rails of the seat. If they are broken (example being passenger kicking them), the seat will not fold up.
If seat concerns are still not resolved, please create seat control unit logs N32/5 and N32/6 and submit them along
with information of initial checks via a PTSS case.
13.04.2022 14:48:42
© Copyright Mercedes-Benz AG
JKANTAR
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Symptoms
Body > Seat > Seat adjustment > Function error
Body > Seat > Seat adjustment > Does not lock
Body > Seat > Seat adjustment > Does not unlock
Operation numbers/damage codes
Op. no.
Operation text
13.04.2022 14:48:42
© Copyright Mercedes-Benz AG
Time
JKANTAR
Damage
code
Note
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