Mercedes Benz C 300 4MATIC # S-54_21-234A Date: 101026 Electrical - Aftermarket Tampering Malfunctions
Mercedes Benz C 300 4MATIC # S-54_21-234A Date: 101026 Electrical - Aftermarket Tampering Malfunctions Date: October 26, 2010 Order No.: S-B-54.21/234a Supersedes: S-B-54.21/234, dated July 27, 2010 119 Group: 54 Revision History Revision Date Purpose a 10/22/10 Additional devices and pictures added. - 7/27/10 Initial issue SUBJECT: MY- All, Models All Malfunctions Due to Other-Make Installations Recent attempts manipulating vehicle mileage through the use of third party electronic devices installed on Mercedes-Benz vehicles are being reported. There are several CAN manipulation devices on the market. Be particularly aware of two devices which are installed in tandem with the instrument cluster or the EIS (Figure 1) and a circuit board which can be installed directly within the EIS (Figure 2). If vehicle electronics malfunction, control units display implausible mileage readings, or malfunctions lack corresponding default entries; check the vehicle for n...