Mercedes W169 fuse and relay

Mercedes W169 represents the second generation of the A-class Mercedes-Benz which was produced in 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 and was designated as Mercedes A150, Mercedes A160, Mercedes A170. During this time, the model has been restyled. In this material you will find information about the location of all electronic control units, a description of the fuses and relays Mercedes w169 with box diagrams and photo examples of their execution. Note the cigarette lighter fuse.

mercedes w169

The execution of the boxes and the arrangement of elements in them may differ from those provided and depend on the year of manufacture and the level of electrical equipment of your car.

Location

Layout

layout

Assignment

1ABS electronic control unit
2Air conditioning control unit – in the heater control panel
3Antenna amplifier 1
4Antenna Signal Amplifier 2
5Side impact sensor (left)
6Side impact sensor (right)
7Anti-theft system control unit
8Vehicle tilt sensor (anti-theft system)
9Anti-theft horn – on intake resonator
10Volume change sensors (anti-theft system)
11Audio system
12Additional heater
13Accumulator battery
14CAN data bus, gateway control unit
15Central locking signal sensor (infrared) – in the handle of the driver’s door
16Diagnostic connector (DLC)
17Left front door electrical control unit
18Left rear door electrical control unit
19Right front door electrical control unit
20Right rear door electrical control unit
21Fuse box/relay dashboard
22Fuse/Relay Box, Footwell
23Horns – behind the front bumper
24Ignition lock control unit
25Electronic immobilizer control unit – (integrated with ignition lock control unit)
26Immobilizer Ring Antenna
27Turn signal/alarm relay-in multifunction control box
28Lighting control unit
29Multifunctional control unit – connected to the fuse/relay box in the footwell -functions: Interior lamps, exterior lamps, horns, windshield wipers, central locking, power windows, direction indicators, anti-theft system, sunroof, seat heaters, immobilizer
30Multifunction steering wheel controls
31Multifunction switch control unit
32Navigation system control unit
33Ambient temperature sensor
34Parking system control unit
35Power steering control unit
36Rain sensor – in the interior rearview mirror
37Seat heating control unit
38Passenger seat sensor – in the passenger seat
39Steering column electrical control unit
40SRS electronic control unit
41Telephone network connection module
42Phone interface control unit
43Trailer control unit
44Electronic transmission control unit – in the gearbox
45Windshield Wiper Intermittent Relay

Fuse box

The main fuse box is located next to the battery in the front passenger footwell. To access it, you need to remove the floor lining.

Location of fuse box mercedes 169

Diagram

Diagram of fuse box mercedes 169

Designation

F110A Dorestyling: Brake light switch
5A Facelift and restyle with code U58 (exterior lighting package): Brake light switch
F225A Heated rear window
F37.5A Instrument cluster
EZS control unit
F415A EZS control unit
Electric steering lock control unit
F57.5A HAU control panel
Control panel KLA (automatic climate control)
F615A Left horn
Right horn
F725A Fuel pump with fuel level sensor
F825A Ceiling Control Panel
F940A ESP and BAS control unit
F1040A Fan motor
F1130A Engines 266: Relay el. terminal 87 circuits, motor
40 Engines 640: Relay el. terminal 87 circuits, motor
F125A Steering column electronic module
Multifunction steering wheel
F1325A Front left door control unit
F1425A Front right door control unit
F1525A ESP and BAS control unit
F1610A Diagnostic connector
PTS control unit (parktronic, dorestyling)
F175A Exterior lighting rotary switch
F187.5A Transmission 711, 716: Reverse signal switch
F195A Micromechanical angular rate sensor AY
F207.5A SRS control unit
F2130A Starter
F227.5A Instrument cluster
F2320A Engines 640 (from 1.9.08): Fuel filter condensation sensor with heating element
7.5A Dorestyling: Heated washer nozzles
F247.5A Electric power steering (ES) control unit
F257.5A Brake light switch
ESP and BAS control unit
F267.5A Gearbox 722: Selector lever electronic module control unit
F2710A Transmission 722: Electrical control module CVT (continuously variable automatic transmission)
F285A Exterior lighting rotary switch
F2930A SAM control unit
F3025A Relay el. circuit terminal 87F
F315A Exterior lighting rotary switch
Central interface control unit (vehicles before 11/30/05)
F327.5A Engines 266: ME control unit
F3315A Audio system
Audio module and navigation unit
Block-panel for control and indication COMAND
F3425A Rear left door control unit
F3525A Rear right door control unit
F3610A Facelift: PTS control unit (Parktronic)
trailer control unit
7.5A Dorestyling: Trailer control unit
Electrical connector mobile phone chain
F377.5A SRS control unit
Passenger/Child Seat Recognition Sensor on the Front Passenger Seat
Front passenger seat occupied recognition
F3825A Cigarette lighter, front
F3925A Wiper motor
F4025A Sectional roof: Overhead control box (sunroof motor)
7.5A Ceiling control box
F4115A Tailgate wiper motor
F427.5A Glove box lighting with microswitch
Vanity mirror lighting left and right
Pedal Depression Sensor (Driving School Package)
Footwell light switch (driving school package)
Detachable connection VICS+ETC power supply (Japan)
Emergency call system control unit (USA)
F437.5A Motors 266: Cable lug electr. circuit terminals 87M1e
15A Motors 640: Cable lug electr. circuit terminals 87M1e
Dual-fuel gas-petrol engine: Cable lug electr. circuit terminals 87M1e
F4415A Motors 266: Cable lug electr. circuit terminals 87M2e
20A Motors 640: Cable lug electr. circuit terminals 87M2e
F4525A Engines 640: CDI system control unit
F4625A Woofer (Japan, facelift)
40A Speaker amplifier (restyling)
7.5A UHI control unit (universal mobile phone interface) (pre-styling)
GSM network compensator 1800 (dorestyling)
Phone control unit (Japan, doestyling)
F477.5A Electrical connector mobile phone chain
UHI control unit (universal mobile phone interface)
Voice control system control unit (dorestyling)
Phone control unit (Japan, doestyling)
F487.5A EDW control unit / towing protection / interior protection system
alarm siren
F4925A Upper control box
Front left seat cushion heating element (dorestyling)
Element for heating the back of the front left seat (dorestyling)
Front right seat cushion heating element (dorestyling)
Front right seat back heating element (dorestyling)
F507.5A Multimedia interface control unit (restyling)
Digital TV tuner (restyling)
Control unit for digital sound broadcasting system (restyling)
CD changer (dorestyling)
Detachable connection VICS + ETC power supply (Japan, doestyling)
30A Service vehicles: Roof beam
Cable lug electr. terminal 30 circuits
F5110A Passenger weight system (WSS) control unit (Canada)
Control panel for special signals (service vehicles)
F527.5A Emergency call system control unit (ve/m up to 31.5.06)
5A Power supply VICS+ETC connector (Japan, vehicles before 5/31/06)
F5330A Interior socket
Cigar lighter with ashtray light, rear
F5415A Service vehicles: Socket 2-pole 12V
25A Speaker system amplifier (pre-styling)
Woofer (dorestyling)
F557.5A Dorestyling and restyling with code 614:
Front left headlight
Front right headlight
10A Facelift: Front left headlight
F5610A Facelift: Front right headlight
F5715A AHV drawbar connector, 13-pin (restyled)
20A Audio interface control unit (Japan. pre-styling)
7.5A Emergency call system control unit
SDAR control unit
F5825A Trailer control unit
F5920A AHV drawbar connector, 13-pin
Trailer control unit (vehicles up to 31.5.05)
F6020A Driver’s seat contact strip
F6120A Contact strip, front passenger seat
F6240A Restyling: Relay el. terminal 15 circuits (2) (optional equipment: xenon headlights, mobile phone)
25A Dorestyling: Relay el. terminal 15 circuits (2) (optional equipment: xenon headlights, mobile phone)
F637.5A SDAR control unit (Canada)
25A Roof beam (service vehicles)
F6440A Engines 266: Air pump relay
80A Engines 640: End of glow plug time
F6580A Electric power steering (ES) control unit
F6660A SAM control unit
F6750A Relay el. terminal 15R circuits (2) (accessory)
F6850A Standard equipment (facelift): Electric suction fan for engine and air conditioner with integrated regulator
60A 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): Drawbar))
F6950A Relay el. circuit terminal 15R (1)
F7060A Relay el. terminal 15 circuits (1)
F71150A Engines 640: Additional PTC heater
F7260A Dorestyling: Cable lug electr. terminal 30 circuits
Service vehicles:
Fuse 7 (F7f7)
Fuse 10 (F7f10)
Taxi:
Special vehicle multifunction control unit (MSS)

Fuses 38 and 53 are responsible for the operation of the cigarette lighters.

Relay box

Under the instrument panel, at the feet of the front passenger, there is a block with a relay. You have to remove the trim to access it. The glove box does not need to be removed.

Location 1

Diagram

Diagram relay box mercedes w169

Allocation

Fuses
8030A Taxi, company, rental cars: Special vehicle multifunction control unit (MSS)
8130A Taxi, company, rental cars: Special vehicle multifunction control unit (MSS)
8230A Taxi, company, rental cars: Special vehicle multifunction control unit (MSS)
8330A Taxi, company, rental cars: Special vehicle multifunction control unit (MSS)
Realy
АRelay el. circuit terminals 15R (2)
BRelay el. circuit terminal 15R (1)
CHorn relay
DHeated rear window relay
EWiper relay, mode 1/2
FWiper relay ON/OFF
GRelay el. terminal 15 circuits (1)
HBackup relay
IAir pump relay
KFuel pump relay
LRelay el. terminal 87 circuits, motor
МStarter relay
NRelay el. circuit terminal 87F
ORelay el. terminal 15 circuits (2)

 

That’s all. If you know how to make the material better – write in the comments.

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