2017 Mercedes Benz C 43 AMG Diagnostic and Repair# P-80_35-43 Date: 071102

Keyless Entry - LED on Transmitter Key Not Functioning
Date: November 2, 2007
Order No.: P-B-80.35/43
Supersedes:
Group: 80
SUBJECT:
All Model 171, 202, 203, 208, 209, 210, 211, 215, 220 and 230
Equipped with Drive Authorization System (DAS3) (FBS3)
Battery Indicator (red LED) on Transmitter Key Not Functioning
If you receive customer reports on the above model vehicles that when using a new transmitter key for the first time the battery indicator is
nonfunctional (lock/unlock is unaffected), reinsert the key into the ignition a second time. Proper operation of the key is restored automatically once
the key is taught into the vehicle.