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Home >> Mercedes Benz >> 2004 >> CLK55 2D Convertible >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instructions -- Basic Knowledge - 209 Chassis >> Basic Knowledge >> Output acoustic warning messages, function - GF54.30-P-2013 >> Output acoustic warning messages, function - GF54.30-P-2013Q

Output acoustic warning messages, function - GF54.30-P-2013Q

Model 209.3 /4 up to 31.5.05 

Acoustic warning function 

The acoustic turn signal indicator (A1h2) is integrated within the instrument cluster (A1). This is a contactless relay. The turn signal flasher is always accompanied by an acoustic clicking sound generated in the same rhythm. The acoustic turn signal/flasher (A1h2) function varies according to the type of signal.

Turn signals 

The signal to actuate the acoustic turn signal indicator (A1h2) comes via the Controller Area Network Class B bus (interior) (CANB) from the column jacket module (N80). If one of the turn signals fails, the acoustic turn signal indicator (A1h2) operates at twice the usual frequency. The instrument cluster (A1) receives via CAN-B the information "Turn signal lamp defective" from the rear SAM control unit with fuse and relay module (N10/2) which actuates the defective turn signal lamp.

Hazard warning flashers 

The signal for actuating the acoustic turn signal indicator (A1h2) comes from the upper control panel control unit (N72/1).via CAN-B

Anti-theft alarm system (EDW) turn signal indicating 

The signal to actuate the acoustic turn signal indicator (A1h2) comes from the front SAM control unit with fuse and relay module (N10/1) via CAN-B.

Warning signal 

The instrument cluster (A1) has the warning buzzer (A1h1) which outputs a warning tone for various problems and operating conditions.

A warning tone is output when one of the following factors exists:

  Instrument cluster (IC), location/task   GF54.30-P-3039Q