The additional relay and fuse box 1 is located on the left rear in the engine compartment. When the cover (3) is removed, the relays (2) and thermal fuses (1) are visible. Designation:
1 — fan control unit;
2 — relay for electric fan of engine cooling system 1 stage;
3 - relay for electric fan of engine cooling system 2 stages;
4 - relay for fog lights;
5 — relay for disabling the electronic differential lock;
6 — intensive glass washing control unit;
7 - free;
8 - relay for all-wheel drive reverse lights with automatic transmission);
9 — magnetic clutch engagement relay (automatically or manually);
10 — magnetic clutch control unit (manual air conditioner);
11 — Windscreen cleaning/washing system relay;
12 - free;
13 — relay for adjusting the current in the speakers;
14, 15 — light bulb control unit;
16 - free;
17 — relay for air conditioner standby mode (manual air conditioner);
B1 - Thermal fuse I for seat position adjustment;
B2 - Thermal fuse II for seat position adjustment;
VZ — thermal fuse for the thermostat of the heated closing cylinder;
B4 - Thermal fuse for trailer plug socket;
B5 - free;
A1 - Thermal fuse for electric windows;
A2 - Thermal fuse for central locking system, anti-theft system, infrared ray control unit;
AZ - Thermal fuse for electrically sliding sunroof;
A4 - Thermal fuse for radio/speakers;
A5 - thermal fuse for seat heating.
Right: under the trim (1) on the left in the driver's footwell is the additional relay block II (2). List of designations for the upper figure:
1 - control unit for window lifters and sliding sunroof;
2 — control unit for window lifters and sliding sunroof;
3 - Relay for power windows and sunroof;
4 - overvoltage protection relay (airbag), ABS combination relay;
5 — automatic transmission lever lock control unit;
6 - relay for automatic transmission.
The additional relay block I is located on the left rear in the engine compartment in the so-called waterproof housing. In addition to numerous relays and control units, various thermal fuses and connections for connecting diagnostic equipment are also located here (see chapter "Regular maintenance").
The additional relay block II is located under the side trim on the left in the driver's footwell. To do this, remove the Phillips-head screws from below, then remove the cover. Remove the Phillips-head screws from the side trim and carefully remove them.
The additional relay block III is located under the right side trim panel in the area of the feet of the passenger sitting next to the driver, i.e. to a certain extent "mirror" to the position of the additional relay block II. Removing the trim panel is the same as for the additional relay block II.
Note: The cover of the waterproof housing of the additional relay unit I must be closed, otherwise draughts will blow through the driver's legs while driving. This is often forgotten after diagnostics in the auto repair shop.
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