Lighting - 'High Beam Assist Inoperative' Message Appears
High Beam Assist temporarily inoperative
Mercedes-Benz A220 2020 Page 45
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:
In isolated circumstances, it can happen that the multifunction camera fails to log into the data bus CAN in the temperature ranges (23 锟斤拷F to + 41 锟斤拷F
and 68 锟斤拷F to 86 锟斤拷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).
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