Complaint
Customer complains about anti-theft alarm system triggering without obvious cause when the vehicle is parked and/or
when entering the vehicle.
All MFA2 and 167 derivates with code 882 may be affected.
This is caused by a sporadic loss of communication to the anti-theft alarm system [N26/6]. In many instances there
are one or more FCs U110D87, U001988, U016787 stored in the control units anti-theft alarm system [N26/6] and/or
signal acquisition and actuation module [N10] / [N10/6]. The alarm system memory may contain several alarm sources.
Please process all following points in succession:
1. Check
- Power supply of the overhead control panel [N70]
- Ground points of the overhead control panel [N70]
⢠Model series 118, 177, 247: W78
⢠Model series 167: W15/2
⢠Model series 243: W78/2
- LIN lines between overhead control panel [N70] and alarm siren [H3/1]
- CAN lines between overhead control panel [N70] and signal acquisition and actuation module [N10] or [N10/6]
2. Open TIPS case
- Open a TIPS case for vehicles:
⢠As of manufacturing date 01.02.2022, except production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa
⢠As of manufacturing date 01.08.2022 and production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa
- Attach photo of overhead control panel label (see example images)
- Add control unit log of anti-theft alarm system [N26/6]
3. Remedy for vehicles prior to manufacturing date 01.02.2022 (except production plant 4831 Aguascalientes Mexico
or 1380 Tuscaloosa) or 01.08.2022 (production plant 4831 Aguascalientes Mexico or 1380 Tuscaloosa)
- If the problem cannot be reproduced, the overhead control panel [N70] (anti-theft alarm system [N26/6] is integrated)
must be replaced.
