Hazard Warning Lamps: Description and Operation

Component Identification:

Function sequence
Function prerequisites:
- Hazard warning flasher switch actuated.

1 The position of the hazard warning flasher switch is read in by the upper control panel control module (N72/1).
2 The upper control panel control module sends a signal (1) to the jacket tube module (N80) via the CAN bus.
3 The jacket tube module generates the flasher message and sends a signal (2) via the CAN bus to the
- instrument cluster (A1),
- left front SAM control module (N10/6),
- right front SAM control module (N1O/7),
- rear SAM control module (N1O/8),
- trailer recognition control module (N28/1),
- left front door control module (N69/1) and
- right front door control module (N69/2).
4 The instrument cluster (A1) actuates the audible turn signal indicator (A1h2), the left or right turn signal indicator lamp (A1e1, A1e2).
5 The left front SAM control module (N10/6), right front SAM control module (N10/7) and rear SAM control module (N1O/8) actuate the following lamps:
- left front turn signal lamp (E1e5),
- right front turn signal lamp (E2e5),
- left rear turn signal lamp (E3e1)
- right rear turn signal lamp (E4e1).
6 The left front door control module (N69/1) and right front door control module (N69/2) actuate the following lamps:
- left exterior mirror turn signal lamp (E6/5) and
- right exterior mirror turn signal lamp (E6/6).
7 The trailer recognition control module (N28/1) actuates the trailer hitch socket (13-pin, X58), if necessary.


NOTE: If the jacket tube module fails, the flashing signal for the hazard warning flashers is generated by the upper control panel control module.