LI82.25-P-060303

Front turn signal inoperative
Topic number
LI82.25-P-060303
Version
3
Design group
82.25 Signaling equipment/emergency alarm system
Date
03-24-2015
Validity
463.237 (G 550) since model year 2013 (code XZ2, XZ3
or XZ4);
463.273 (G 63 AMG)
Reason for change
Distribution extended
Reason for block
Complaint:
- The front left or right turn signal is inoperative
- Display in instrument cluster "Turn Signal Bulb Failure"
- The turn signal flash frequency is increased
- Fault code B163A11 or B163E11 is current or is stored in the front SAM control unit
The problem is no longer present when the ignition has been switched off and on.
Cause:
Due to tolerances in the bulb amperage of the front turn signals, the front SAM control unit erroneously detects a short
circuit to ground.
Remedy:
Development approval for a new coding for the front SAM control unit with adjusted threshold value for the short circuit recognition is being prepared.
No countermeasure is available at the present time; replacing the parts (Front SAM (CBC), turn signal bulb, housing)
is not effective.
Symptoms
Overall vehicle / Lighting / Exterior lights / Turn signal/hazard warning lights / Turn signal lights / Nonfunctional
Control unit/fault code
Control unit
Fault code
Fault text
SAM - Signal acquisition and B163A11
actuation module (N10) (CBC)
The output for the left front turn signal lamp has a malfunction.
There is a short circuit to ground.
SAM - Signal acquisition and B163E11
actuation module (N10) (CBC)
The output for the right front turn signal lamp has a malfunction.
There is a short circuit to ground.
03-24-2015 5:07 PM
© Copyright Daimler AG
BRABENS
Page 1/2
Validity
Vehicle
Engine
Transmission
463.237
*
*
463.273
*
*
03-24-2015 5:07 PM
© Copyright Daimler AG
BRABENS
Page 2/2