Daytime running light control, function (except code 614) - GF82.10-P-3005SK

MODEL 171.4 except CODE (614) Bi-xenon headlamp unit 

Fig 1: Daytime Running Light Control Function Chart

Courtesy of MERCEDES-BENZ USA

Function requirements:

• The exterior light switch (S1) is in position "0".
• The "light actuation for driving lamps" function is set to "continuous" in the instrument cluster (A1), or is permanently preset ex works due to legal regulations in the following national versions and cannot be deactivated.
• Circuit 61 ON

Function 

The instrument cluster (A1) transmits, as soon as "circuit 61 ON" is present, the "daytime running lamps ON" message to the driver-side SAM control unit with fuse and relay module (N10/1) via the Controller Area Network Bus Class B (interior) (CAN-B). It actuates the following lamps via discrete wiring:

• Left low beam (E1e2)
• Left standing and parking lamp (E1e3)
• Right low beam (E2e2)
• Right standing and parking lamp (E2e3)

The driver-side SAM control unit with fuse and relay module (N10/1) transmits the message for switching the rear lamps on to the rear SAM control unit with fuse and relay module (N10/2) via CAN-B. The rear SAM control unit with fuse and relay module (N10/2) actuates the following lamps via discrete wiring:

• Left stop lamp, taillamp and parking lamp (E3e9)
• Right stop lamp, taillamp and parking lamp (E4e9)
• Left license plate lamp (E19/1)
• Right license plate lamp (E19/2)

The daytime running lamps have a higher priority than the automatic driving lights of the rain/light sensor (B38/2).

In those countries with a statutory daytime running light regulations, only the headlamp flasher is permitted in daytime running lights mode, and not the high beam.