This Chapter is devoted to the description of maintenance and repair procedures for some components of the onboard electrical system, which include, in addition to the specific ones discussed below, also all lighting devices and electrical accessories not directly related to the engine. In addition, the procedures for diagnosing malfunctions of electrical equipment of a general order are considered. Information on the battery, generator and starter is given in Chapter Engine Electrical Systems.
Caution: When performing any repair and maintenance work on the components of the electrical system, it is imperative to first disconnect the ground cable from the battery in order to avoid electrical injury and / or fire.
Warning: Separate characteristics are also given in the text of the Chapter and, if they are mandatory, are highlighted in bold.
Incandescent lamps 12 V
Purpose |
Plinth Type |
Power, W |
high beam |
H7 |
55 |
Dipped beam, halogen/xenon |
H7/D2S |
55/35 |
Fog lights |
H11 |
55 |
parking light |
W |
5 |
Front direction indicators |
PY |
21 |
Side turn signal repeaters |
WY | 5 |
Rear direction indicators |
PY | 21 |
parking lights |
R | 5 |
Stop lights |
R | 21 |
misty lanterns |
R | 21 |
reversing lights |
R | 21 |
License plate lights |
WITH | 6 |
Reading light |
R | 6 |
Dome light front |
WITH | 10 |
Interior/trunk lights |
WITH | 6 |
Glove box/trunk |
W | 5 |
Lamps for lighting the footwell/entrance area |
W |
5 |
Characteristic |
Meaning |
H7/H11 |
Halogen lamp |
D2S |
High voltage xenon lamp |
R |
bayonet base |
W |
glass plinth |
WITH |
Soffit |
Y |
Orange color |
Electrical fuses
Fuse cover. Left end side of the instrument panel
Fuse board in instrument panel
Fuse color codes
Color |
Maximum current, A |
Light brown |
5 |
Red |
10 |
Blue |
15 |
Yellow |
20 |
Natural (white) |
25 |
Green |
30 |
Purpose of the fuses
Some of the specified consumers are only for certain modifications or are included in the custom package. In case of discrepancy, the data given in the sticker located on the inside of the fuse cover has priority.
№ |
Consumer |
Current strength, A |
1 |
Air conditioner |
10 |
2 |
Footwell lights |
5 |
3 |
Heated windshield washer jets |
5 |
4 |
Cooling fan |
5 |
5 |
Telephone, engine oil level sensor, multifunction switches, heated rear seats, rear window shade, automatic transmission (gearshift rocker) |
10 |
6 |
Air conditioner (air quality sensor), pressure meter |
5 |
7 |
Electronic anti-skid system (ESP), brake light switch, clutch pedal sensor, steering wheel angle sensor |
10 |
8 |
Telephone |
5 |
9 |
brake booster (Vacuum pump) |
15 |
10 |
Automatic headlight beam throw adjustment |
10 |
11 |
Absent |
|
12 |
Diagnostic socket |
10 |
13 |
steering column module |
10 |
14 |
Brake lights |
10 |
15 |
Dashboard, navigation system |
10 |
16 |
Garage door opener |
5 |
17 |
Parking assistance, ride height control, tire pressure monitoring |
10 |
18 |
Absent |
|
19 |
Fog lights, rear fog lights |
15 |
20 |
Dipped beam right headlight, headlight range adjustment |
15 |
21 |
Dipped beam left headlight, headlight range adjustment |
15 |
22 |
driver's door |
15 |
23 |
front passenger door |
15 |
24 |
Electrical comfort with a single control |
20 |
25 |
heater fan |
30 |
26 |
Rear window heating |
30 |
27 |
trailer socket (Control block) |
30 |
28 |
Fuel pump, auxiliary diesel pump |
20 |
29 |
Engine management |
20 |
30 |
Sliding roof panel |
20 |
31 |
Reversing lights, automatic transmission, diagnostic socket, auto-dimming interior mirror |
15 |
32 |
Engine management |
20 |
33 |
cigarette lighter |
15 |
34 |
Engine management |
15 |
35 |
Socket in the trunk |
30 |
36 |
Wiper |
30 |
37 |
Windshield and headlight washer pump |
25 |
38 |
Electrical convenience with single control, tailgate release |
15 |
39 |
radio system |
20 |
40 |
Sound signal |
25 |
41 |
Absent |
|
42 |
Electronic anti-skid system (ESP) |
|
43 |
Engine management |
15 |
44 |
Seat heating |
30 |
Power windows and power seats are controlled overload protection circuit breakers. After removing the overload (e.g. in case of glass freezing) they switch back on automatically after a few seconds.
Relay
Central microrelays
- 1 - Horn relay
- 2 - Load reduction relay
- 4 - Fuel pump relay
- 5, 6 - Intermittent wiper / washer relay
8-position relay box
- 2 - Relay for controlling the second speed of the cooler fan
- 3 - Cooler fan control relay (1st speed) /coolant pump control
- 4 - Bele of the power window control unit / sunroof / ABS relay (with ESP)
- 5 - Control unit for warning signals of open doors
- 7 - Radio/CD changer/ABS pump relay
- F2 - Passenger seat electrics
- F3 - Electric driver's seat
- F5 - Additional power connector
- F6 - Front power window circuit protection
- F7 - Rear power window circuit protection
- F8, F9, F11 - Relay and radiator fan control unit
- F10 — ABS
3-position relay box
- 1 - Relay 2 coolant heating (diesel)
- 2 - Relay for additional air supply / Relay 1 for heating coolant (diesel)
- 3 - ECM power relay
- F1 —
- F2 - ECM
- F4 - Coolant heater 2 (1.9 TDI) /Secondary air pump/glow plugs (2.5 TDI)
- F5 - Coolant heater 1 (1.9 TDI)
- F6 - Glow Plugs (diesel)
13-position relay box
- 3 — the Relay of the K/V coupling
- 4.5 - Rear lights control unit
- 6 — the Relay of illumination of the lever of the selector
- 7 - Foggy headlight relay
- 8 - DRL enable relay
- 9 - Relay running lights
- 13 - Park / Neutral position relay
The location of the main electrical elements in the body
- 1 - Tempostat control unit
- 2 — TCM
- 3 - Airbag control unit
- 4 - 13-pass relay block
- 5 - Anti-theft system / interior lighting / single lock control unit
- 6 - Ultrasound sensor control unit
- 8 - Fuse panel
- 9 - Left connection block
- 10 - Central microrelays
- 11 - 8-way relay block
- 12 — ECM
- 13 - Right connecting block
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