Turn signal lamps, function

P82.10-2039-09

A1 Instrument cluster

A1e1 Left turn signal indicator lamp

A1e2 Right turn signal indicator lamp

A1h2 Audible turn signal indicator

CAN Controller-area network (data bus)

E1e5 Left front turn signal lamp

E2e5 Right front turn signal lamp

E3e1 Left rear turn signal lamp

E4e1 Right rear turn signal lamp

E6/5 Left exterior mirror turn signal lamp

N28/1 Trailer recognition control module

N69/1 Left front door control module

N69/2 Right front door control module

N72/1 Upper control panel control module

N80 Jacket tube module

S4 Combination switch

X58 Trailer hitch socket (13-pin)

E6/6 Right exterior mirror turn signal lamp

K40/5 Rear fuse and relay module

K40/6 Left front fuse and relay module

K40/7 Right front fuse and relay module

N10/6 Left front SAM control module

N10/7 Right front SAM control module

N10/8 Rear SAM control module

Function sequence
Function prerequisites:

 Ignition: ON

 Combination switch (S4) switched to left or right turn signal position.

1 The position (1) of the combination switch is read in by the jacket tube module (N80).

2 The jacket tube module generates the turn signal message and transfers it via a signal (2, 2a,3) on the CAN bus to the

– instrument cluster (A1),

– left front SAM control module (N10/6),

– right front SAM control module (N10/7),

– rear SAM control module (N10/8),

– trailer recognition control module (N28/1),

– left front door control module (N69/1),

– right front door control module (N69/2) and

– upper control panel control module (N72/1).

3 The instrument cluster (A1) actuates the audible turn signal indicator(A1h2) as well as the left or right turn signal indicator lamps (A1e1, A1e2).

4 The left front SAM control module (N10/6), right front SAM control module (N10/7) and rear SAM control module (N10/8) actuate the following lights depending on the requirements:

– left front turn signal lamp (E1e5) and

– left rear turn signal lamp (E3e1),

or

– right front turn signal lamp (E2e5) and

– right rear turn signal lamp (E4e1).

5 The left front door control module (N69/1) and right front door control module (N69/2) actuate the following lamps depending on the requirements:

– left exterior mirror turn signal lamp (E6/5) or

– right exterior mirror turn signal lamp (E6/6).

5 The trailer recognition control module (N28/1) actuates the trailer turn signal lamps via the trailer hitch socket (13-pin, X58).



If one of the bulbs in the actuated turn signal lamps is burned out, the flashing frequency of the left or right turn signal indicator lamp in the instrument cluster doubles. The flashing frequency of the turn signal lamps itself remains unchanged.
If the hazard warning flashers are switched on at the same time as the turn signals, the turn signals have priority.