LI46.80-P-072750

Fault Code C112502 Logged In Rear Axle Steering Control Unit (N68/4)
Topic number
LI46.80-P-072750
Version
4
Function group
46.80 - Auxiliary rear axle steering, auxiliary steering axle
(ZL), electro-hydraulic auxiliary steering (EHZ)
Date
1/6/22
Validity
Model 206 with code 201 or 216
model 223 with code 201 or 216
model 297 all
Reason for change
Model 297 incorporated
Complaint
The fault code C112502 is logged (as current or stored) in the rear axle control unit (N68/4).
Cause
The fault code is caused by communication with the ESP control unit:
1.
2.
After carrying out a quick test or performing a diagnosis on the ESP control unit (N30/3): This fault code occurs
in the ESP control unit (N30/3) as a result of the diagnosis performed with XENTRY Diagnosis. At the point of
diagnosis, the ESP control unit (N30/3) sends the value "ERROR" on the FlexRay. The rear axle steering control
unit (N68/4) is not able to process this value and logs the fault code C112502.
As a result of a fault code logged in the ESP control unit (N30/3): As a result of the fault code logged in the ESP
control unit (N30/3), the ESP control unit (N30/3) sends the value "ERROR" on the FlexRay and the rear axle
steering (N68/4) switches to the safe mode provided for this purpose.
Remedy
Re. cause 1: If fault code C112502 does not occur until after a quick test or after a diagnosis performed directly in
the ESP control unit (N30/3), the fault code can be ignored and deleted directly in the rear axle steering control unit
(N68/4). If the fault code is current, perform an ignition off/on so that the fault code is only registered as stored.
Re. cause 2: If fault code C112502 is already present when the first quick test is carried out, check and process the
fault code(s) in the ESP control unit (N30/3). Here too, the fault code can be ignored and deleted directly in the rear
axle steering control unit (N68/4).
Symptoms
Chassis/suspension > Steering system > Display message > Pow. steer. faulty Serviced Required
Control unit/fault code
Control unit
06.01.2022 15:06:17
© Copyright Mercedes-Benz AG
Fault text
JKANTAR
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N68/4 - Rear axle steering (HAL)
C112502 - The rear axle steering has a malfunction. There is a general signal fault.
Operation numbers/damage codes
Op. no.
Operation text
06.01.2022 15:06:17
© Copyright Mercedes-Benz AG
Time
JKANTAR
Damage
code
Note
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