The second generation Mercedes-Benz A-Class was introduced in 2004. The body of the car was assembled from high-strength steel alloys with special adhesive joints, inheriting the "sandwich" architecture from its predecessor. In 2008, the car underwent a facelift. In this material, we will analyze in detail the Mercedes fuse circuits in the back of the W169 2nd generation A-class (A150, A160, A170) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 release.
The diagrams of the 2nd generation Mercedes A-class (W169 body: A150, A160, A170) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 year release are considered.
In the passenger compartment
Fuse box
Located in the front passenger's footwell. To access it, you must remove the floor cladding.
General form.
Diagram
No.
A
Description
1
10
Before 2008 restyling: Brake light switch
5
code U58 (exterior lighting): Brake light switch
2
25
Heated rear window
3
7.5
Instrument cluster
EZS module
4
15
Electronic steering lock control unit
5
7.5
HAU panel module
Panel module KLA (automatic climate control)
6
15
Right horn
Left horn
7
25
Fuel module with fuel level sensor (fuel pump fuse)
8
25
Ceiling module-control panel
9
40
ESP and BAS system module
10
40
Fan motor
11
30
Engine 266: Relay el. terminal 87 circuits, motor
40
Engine 640: Relay el. terminal 87 circuits, motor
12
5
steering column module
Multifunction steering wheel
13
25
Front left door module
14
25
Front Right Door Module
15
25
ESP and BAS system module
16
10
Diagnostic connector
PTS module (parking sensors, dorestyling)
17
5
Rotary switch for outdoor lighting
18
7.5
KP 711, 716: Reversing signal switch
19
5
Micromechanical yaw rate sensor AY
20
7.5
Passive safety system control module
21
30
Starter
22
7.5
Instrument cluster
23
20
Engine 640 (from 1.9.08): Fuel filter condensate sensor with heating element
UHI (Universal Mobile Phone Interface) module (before restyling)
GSM 1800 network compensator (before restyling)
Phone (Japan, before restyling)
47
7.5
Electrical connector mobile phone chain
UHI Module (Universal Mobile Phone Interface)
Voice control system module (dorestyling)
Phone module (Japan, do-styling)
48
7.5
EDW / Towing Protection / Interior Protection System
Alarm siren
49
25
Upper control panel
pre-styling : heated cushion and backrest of the front left and right seats
50
7.5
multimedia interface (restyling)
Digital TV tuner (restyling)
Digital sound broadcasting system unit (restyling)
CD changer (dorestyling)
Pluggable connection VICS + ETC power supply (Japan, do-styling)
30
Service vehicles: Roof beam
tip electr. terminal 30 circuits
51
10
Passenger Weight System (WSS) Module (Canada)
Control panel for special signaling system (service vehicles)
52
7.5
Emergency call system (vehicles up to 31.5.06)
5
VICS + ETC power supply connector (Japan, vehicles up to 31.5.06)
53
30
Interior socket 12V
Rear cigarette lighter fuse Mercedes A150, A160, A170 with illumination
54
15
Service vehicles : 2-pin 12V socket
25
pre-styling : Speaker amplifier / Woofer
55
7.5
Dorestyling and restyling with code 614: Front left and right headlight
10
Restyling: Front left headlight
56
10
Restyling: Front right headlight
57
15
restyling: AHV towing hitch plug, 13-pin
20
Audio interface control unit (Japan pre-styling)
7.5
Emergency call system control unit
SDAR module
58
25
Trailer module
59
20
AHV trailer coupling, 13-pin
Trailer control module (vehicles up to 31.5.05)
60
20
Driver's seat contact strip
61
20
Front passenger seat contact strip
62
40
Restyling: Relay el. terminal 15 (2) circuits (accessories: xenon headlights, mobile phone)
25
Dorestyling: Relay el. terminal 15 (2) circuits (accessories: xenon headlights, mobile phone)
63
7.5
SDAR module (Canada)
25
Roof beam (company cars)
64
40
Engine 266: Air Pump Relay
80
Engine 640: End of glow plug time
65
80
Power steering module (ES)
66
60
SAM module
67
50
Relay el. terminal 15R (2) circuits (accessory)
68
50
Standard equipment (restyling): Suction electric fan of the engine and air conditioner with integrated regulator ( Dorestyling: (valid for engines 266.920 and 266.940 with gearbox 722))
60
Special equipment (restyling): Dorestyling: (valid for engines 640.940, 640.941, 266.960, 266.980 and for engines 266.920, 266.940 with code (550): Trailer coupling))
69
50
Relay el. terminal 15R circuits (1)
70
60
Relay el. terminal 15 circuits (1)
71
150
Engine 640 : PTC heater
72
60
Dorestyling : electric tip terminal 30 circuits
Service vehicles :
Fuse 7 (F7f7)
Fuse 10 (F7f10)
Taxi :
Multifunctional unit (MSS)
Relay box
An additional mounting block with relay modules is located behind the passenger side trim (K100).
For access:
1. Remove the lining under the glove compartment.
2. Dismantle the panel near the door.
3. Move the floor sheathing to the side.
K100 block diagram
No.
Relay description
A
Relay, circuit 15R (2) (SA)
B
Circuit 15R relay (1)
C
Horn
D
heated rear window
E
1/2 wiper speed
F
on / off wiper
G
circuit 15 (1)
H
Reserve
I
Air pump
K
Fuel module (fuel pump relay)
L
Engine circuit 87 relay
M
Starter
N
Chain 87F
O
Circuit 15 (2) (SA: xenon, cell phone)
No.
Appointment
A
80
Taxi
30
81
30
82
30
83
30
General arrangement
Location of the electrical equipment.
No.
Component
1
ABS module
2
Air conditioner control unit - in the heater control panel
3
Antenna signal amplifiers
4
5
Left shock sensor
6
Right shock sensor
7
Anti-theft control module
8
Vehicle tilt sensor (anti-theft system)
9
Anti-theft system horn - on the resonator of the intake system
10
Volume change sensors (anti-theft system)
11
Audio system
12
Additional heater
13
Battery
14
CAN data bus, gateway control unit
15
Central locking signal sensor (infrared) - in the driver's door handle
16
Diagnostic connector (DLC)
17
Left front door module
18
Left rear door module
19
Right front door module
20
Right rear door module
21
Dashboard relay box
22
Fuse box, footwell
23
Klaxon - behind the front bumper
24
Ignition switch control module
25
Immobilizer - (combined with the ignition switch control unit)
26
immobilizer antenna
27
Turn signal / alarm relay - in multifunction control box
28
Lighting unit
29
Multifunction control module - connected to the footwell fuse / relay box -functions: Interior lights, exterior lights, horns, windshield wipers, central locking, power windows, direction indicators, anti-theft system, sunroof, seat heaters, immobilizer
30
Multifunction steering wheel controls
31
Multi-function switch control unit
32
Navigation module
33
Outdoor air temperature sensor
34
Parktronic module
35
Power steering control unit
36
Rain sensor - inside rearview mirror
37
Seat heating module
38
Seat occupant sensor
39
Steering column electronics control unit
40
SRS system
41
Telephone connection module
42
Phone interface
43
Trailer electrical equipment
44
Gearbox module - in the gearbox
45
Relay for intermittent operation of the windshield wiper