Service bulletin LI80.50-P-077350

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

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.

The document

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Components

Electrical system, Ignition

Trouble codes named

U0019, U0167, U110D

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