2017 Mercedes Benz S 63 AMG Technical Service Bulletin # LI82-10_P-0534392 Date: 120612

Lighting - 'High Beam Assist Inoperative' Message Appears
High Beam Assist temporarily inoperative
Topic number LI82.10-P-053439
Version 2
Design Group 82.10 Exterior lights
Date 06-12-2012
Validity MODEL 204.###, 212###, 207.###, 221.###, 215.###, 218.###, 166.### with SA code 608 (High Beam Assist) and not 513/476/238 Affected production period: 01.08.2010 - 31.01.2011 or01.05.2011 - 30.08.2011
Reason for change SA code restricted
Complaint:
When the High Beam Assist is activated a "High Beam Assist inoperative" message appears in the instrument cluster.
Switch-on conditions for High Beam Assist:

• High Beam Assist in instrument cluster menu "On"


• Multifunction switch set to high beam position


• Light sensor detects "Night"

Cause:
Page 37
In isolated circumstances, it can happen that the multifunction camera fails to log into the data bus CAN in the temperature ranges (23 ��F to + 41 ��F
and 68 ��F to 86 ��F). A fault code entry is not made. Following a renewed ignition sequence and a change in component temperature, the system is
operational again.
Remedy:
Replace MFK and calibrate with the aid of the "calibration target for Night View Assist" special tool (W 000 589 01 20 00).
Symptoms
Parts
Work units