- High beam assistant nonfunctional and/or low beam sometimes stays illuminated on one side(For internal use only!) -

主题编号
LI82.10-P-071226
版本
1
功能组
82.10 Exterior lights
日期
04-27-2020
有效性
BR177; BR205 (facelift), BR257, BR213, BR253 (facelift); BR167; BR238, BR257 (facelift), BR231(facelift)
SA code: 641, 642
更改原因

投诉

- Fault messages in instrument cluster: "Adaptive Highbeam Assist Inoperative", "Low Beam Right (Left) Defective" or "IHC Inoperative"

- Headlamp sometimes stays illuminated on one side


原因

The voltage parameters in the headlamp control unit (PXL) are too sensitive. (functional safety fault)

Following fault messages / fault codes are stored in the Xentry quick test:

-  N10/6 - Signal acquisition (SAM-F)

U118A02: Communication with the control unit 'Left (right) headlamp range control' has a malfunction. There is a general signal fault

-  E1n11 / E2n11 - LED Matrix (ECU-LML-LF / ECU-LML-RF)

B178392: The control unit 'LED driving lights actuation module' has a malfunction. The function or the instruction is faulty

-  A40/13 - Multifunction camera (MFK) if high beam assistant is active

U120B97: Communication with the 'headlamp' control unit has a malfunction. System function is restricted


补救

Re-code headlamp control unit (PXL / E1n11 / E2n11 / LED matrix).

(Parameter adaptation in control unit)


症状
症状
Lighting / Exterior lights / Driving lights / Low beams / Indicator lamp / lit
Lighting / Exterior lights / Driving lights / Adaptive Highbeam Assist / Warning message in instrument cluster

控制单元/故障代码
控制单元
故障代码
故障代码说明
A40/13 - Multifunction camera (MFK) (SMPC213) (GLC (253),E (213),GLE (167),CLS (257),C (205),A (177),E (238)) U120B97 Communication with the control unit 'Headlamp' has a malfunction. The system function is restricted.
E1n11 - LED matrix of left front lamp unit (SG-LML-VL) (PXL213_FL) (GLC (253),E (213),GLE (167),CLS (257),C (205),E (238)) B178392 Control unit "LED driving lights actuation module" has a malfunction. The function or the instruction is faulty.
E1n11 - LED matrix of left front lamp unit (SG-LML-VL) (PXL177_FL) (A (177)) B178392 Control unit "LED driving lights actuation module" has a malfunction. The function or the instruction is faulty.
E2n11 - LED matrix of right front lamp unit (SG-LML-VR) (PXL177_FR) (A (177)) B178392 Control unit "LED driving lights actuation module" has a malfunction. The function or the instruction is faulty.
E2n11 - LED matrix of right front lamp unit (SG-LML-VR) (PXL213_FR) (GLC (253),E (213),GLE (167),CLS (257),C (205),E (238)) B178392 Control unit "LED driving lights actuation module" has a malfunction. The function or the instruction is faulty.