Mercedes-Benz E-Class (2003-2009) Fuses and Fuse box location and diagrams

Mercedes-Benz E-Class (2003-2009) Fuses and Fuse box location and

diagrams

In the engine compartment

There is one fuse block in the engine compartment, which is located on the right. It is circled in a red square in the picture above.

General form

Diagram

Relay

Circuit breakers

illumination lamp, headlight range control unit (models with xenon headlights), light switch| 7.5
F55| Telephone| 7.5
F56| Windshield wiper motor| 40
F57| Diesel: Electronic engine control unit| 25
F58| Ignition coils – (112, 113, 156 engines)| 15
F59| Starter relay (^ 31/05/06)| 15
F60| Engine oil cooler blower motor – (E55, E63)| 10
F61| Exhaust air pump – (112, 113, 642.920 engines – except E55)| 40
F62| Not used|
F63| |
F64| Light switch, instrument cluster, electronic air conditioning control unit, steering column electronics control unit (^ 31/05/06)| 7.5
F65| Ignition switch control unit, steering column lock control unit| 20
F66| Headlights| 7.5
F67| Brake light switch (brake pedal position sensor)| 5/10

In the passenger compartment

Main fuse box

Located on the driver’s side, behind the dashboard.

Photo is an example.

Diagram:1

7
F30| Diagnostic connector (DLC)| 7.5
F31| Multifunction control unit 4, multifunction switch control unit – (dashboard (01/06/06 ^)|
F32| Control unit for electrical equipment of the left rear door (01/09/02 – 31/05/06)| 25
F33| Control unit for electrical equipment of the left front door (01/09/02 – 31/05/06)| 25
F34| Front left power seat control unit| 30
F35| –|
F36| Heated front seats (01/09/03 – 31/05/05)| 25
F37| Suspension control unit (01/09/03 – 31/05/06)| 7.5
F38| Empty (01/09/03 – 31/05/05)|
F39| Multifunction control unit 5, multifunction switch control unit – (center console)| 5
F40| Multifunction control unit 4, multifunction switch control unit – (dashboard (01/09/03 – 31/05/05)| 5
F41| Central control unit for CAN data bus| 5
F42| Electronic engine control unit, engine control system relay (01/06/05 ^), electronic control unit for the LPG system, load shedding relay (01/09/03 – 31/05/05), multifunctional control unit 1| 7.5

Auxiliary fuse panel

The add-on unit is located on the passenger side in the legroom.

Diagram:2

In the luggage compartment

There are two blocks in the luggage compartment, the first ( 1 ) behind the trim, and the second ( 2 ) in the spare wheel well. They are marked in the picture above with red squares.

Fuse box #1

General view

Diagram:3

Fuse box #2
Located in the spare wheel niche.

Diagram:4

General arrangement

Location of the electronic modules.

(Estate)
6| Aerial Signal Amplifier 3 (TV Tuner) – RH pillar (Saloon) – RH pillar (Estate)
7| The impact sensor left – behind the headlight
8| Impact sensor, right – behind the headlight
9| Side Impact Sensor Assembly, LH – B-pillar
10| Side Impact Sensor Assembly RH – B-pillar
11| Anti-theft control unit – left side of luggage compartment (combined with multifunction control unit 2)
12| Anti-theft alarm sound – behind the wheel arch trim
13| Sunlight Sensor – Windshield Upper Center
14| Additional battery -> 31/05/06 if available
15| Additional battery -> 31/05/06 if available
16| Additional heater control unit
17| Additional heater remote control receiver – right side of luggage compartment
18| Battery – under the luggage compartment floor
19| Battery Control Unit – Luggage Compartment, Under Floor
20| Trunk lid open/close drive control unit
21| CAN data bus, gateway control unit
22| Diagnostic connector (DLC)
23| Left front door control unit
24| Rear left door electrical control unit
25| Right front door control unit
26| Rear right door electronics control unit
27| Electronic engine control module – Diesel / 112/113
28| Electronic engine control module – 271
29| An electronic engine control module -272/273
30| Fuse/relay box, engine compartment
31| Fuse/relay box, end of dashboard
32| Fuse / Relay Box, Passenger Footwell
33| Fuse / Relay Box, Trunk
34| Fuse/relay box spare wheel well
35| The headlamp control unit, left (models with xenon headlights)
36| Headlamp control unit, right (models with xenon headlights)
37| Headlight range control unit – under the right front seat, under the carpet (models with xenon headlights)
38| Horn 1 – behind the grille
39| Horn 2 – behind the front bumper
40| Ignition switch control unit
41| Electronic immobilizer control module (combined with the ignition switch control unit)
42| Keyless entry system control unit behind ashtray
43| Lighting control unit – behind the headlight switch
44| Luggage compartment load control unit ( station wagon ) – under the trunk floor
45| Multifunction control module 1 – attached to the engine compartment fuse/relay box – functions: A / C pressure monitor, brake fluid level, coolant level, front lights, headlight washers, horns, interior lamps, outside temperature, windshield wipers
46| Multifunction Control Module 2 – Connected to Fuse / Relay Box, Luggage Compartment -Functions: Anti-Theft System, Tailgate / Trunk Lid Opening, Central Locking, Fuel Level, Fuel Pump, Hazard Alarm, Rear Window Defogger, Directional Indicators, Rear Lighting
47| Multifunction control module 3 – in the multifunction switch control unit (overhead console) – functions: Volume change sensors (anti-theft system), sunlight sensor, interior lighting lamps, rain sensor
48| Multifunction control module 4 – in the multifunction switch control unit (dashboard) – functions: Air conditioning control unit, central locking, alarm, rear window wiper
49| Multifunction control module 5- in multifunction switch control unit (center console) – functions: Additional heater switch, parking system, active suspension system, rear door/tailgate opener switch
50| Multifunction control module 6 – footwell, under mat – functions: coolant pump motor, fog lights, seat heaters, reversing lights, gear selector
51| Multifunction control module 7 – in the rear interior lamp (with sunroof) – functions: Interior lamps
52| Navigation system control unit
53| Ambient temperature sensor
54| Parking system control unit – luggage compartment left
55| Rain Sensor – Windshield Upper Center
56| Electric seat control unit, front left – under the seat
57| Power seat control unit, front right – under the seat
58| Headrest drive relay (01/06/05 ^)
59| Solar battery control unit – behind the instrument cluster
60| Steering column electronics control unit – behind the steering wheel
61| Steering column lock control unit – integrated into the ignition lock control unit
62| Steering wheel position sensor – in the steering column electronics control unit
63| Steering wheel heater control unit – near instrument cluster (^ 05/05)
64| Electric sunroof control unit -in the multifunction switch control unit (overhead console)
65| SRS electronic module
66| Active suspension control unit – footwell, under mat
67| Rear door open/close actuator control unit – luggage compartment, left
68| Phone antenna
69| Telephone interface control unit – under the dash, in the rear of the luggage compartment
70| Trailer control unit – left side of luggage compartment
71| Electronic transmission control
No.| Component
---|---
72| Electronic gearbox control module – legroom, under the mat
73| Tire pressure monitor control unit – luggage compartment, left
74| Voice activation system unit – under the panel, in the rear of the luggage compartment
75| Lateral movement sensor

Safety Information

• SRS, or Airbags
  Under no circumstances should a child seat designed to face the rear be installed in the front passenger seat of a vehicle, particularly if said vehicle is equipped with a passenger-side airbag.

• Make certain that the warning light for the SRS and airbags goes out a few seconds after the ignition has been turned on. It is a sign that there is a problem with the system if it stays on or comes on while you are driving.

• System for Braking

• This model comes standard with anti-lock braking, abbreviated as ABS. If the ABS warning light stays on, it indicates a malfunction. Additionally, it is equipped with a BAS (Brake Assist System). Make sure you are familiar with how it works because if it senses that you need to brake quickly in an emergency, it will apply the maximum amount of force to the brakes.

• The Tyre Pressure Monitoring System, or TPMS, includes the following
  Additionally, Always maintain the correct tire pressure. TPMS will alert you if there’s a significant drop in pressure. Never disregard this important warning.

• Fasten Your Belts
  Always fasten your seat belt, and make sure everyone else in the vehicle does the same. Seatbelt tensioners and force limiters have been installed in the vehicle to provide increased levels of safety in the event of a collision.

• Electronic Stability Programme, or ESP for short
  The construction arithms/ The construction arithms/ The construction arithms/ The expression: The construction a. In the event that the ESP warning light remains lit, this indicates that there is an issue with the system.

• Protection of Children
  For optimal safety, ensure that your child’s seat is compatible with either ISOFIX or LATCH. If there are children riding in the back seats, make sure the child safety latches on the doors are engaged.

• Parking Detection Devices and Cameras

• In the event that they are present, sensors and camera lenses should be kept spotless and unobstructed at all times. Do not put all of your faith in these assisting tools. Always perform a manual check of your surroundings, especially when reversing.

• Upkeep and Normal Operation
  Regularly check fluid levels, brakes, tires, and lights. Only the types of engine oil, brake fluid, coolant, and other vital fluids that are suggested should be used.

• If it is present, the PRE-SAFE System will
  This anticipatory system has the ability to recognize unstable driving situations that strongly suggest an accident is about to occur, and it can then prepare the vehicle for the accident by doing things like tightening seatbelts and closing windows. Familiarize yourself with this system.

• System for TeleAid and Emergency Calls
  In the event of a collision, this device has the potential to immediately notify emergency services if it is engaged and in working order. If your vehicle has a system like this one, you need to make sure it is turned on and operational. Always be sure that you are using the type of fuel (diesel or petrol) that is specified in the owner’s manual. Never Make Changes to the Safety Systems: It is important to refrain from making unauthorised alterations to the car’s structural components, electronic systems, or safety systems.

Troubleshooting

• Battery
  • Check for a dead battery or corroded terminals. When attempting to start the vehicle, keep an ear out for a clicking sound coming from the starter motor.
• Fuel
  • Ensure there’s enough fuel in the tank. It’s possible that the key has lost its code for the immobilizer.
• Spark plugs
  • You might want to consider replacing them. Ignition coils should be inspected for any signs of damage or wear.
  • Injectors and the fuel pump should be inspected as part of the fuel system.
  • Check for any leaks or obstructions in the air intake system and make sure there are none.
• Transmission software
  • It is necessary to perform software updates on occasion. Problems with the mechanism Think about getting a diagnostic from a professional.
• Noises from the Suspension or a Rough Ride
  • Examine the shock absorbers to look for any damage or leakage.
  • Check the bushings for any signs of wear or damage.
  • Arms and linkages for controlling Check for loose or damaged parts. Electrical Issues (lights, infotainment system, etc.)
• Fuses
  • Inspect for blown fuses in the fuse boxes. Rotors should be checked for any damage or warping.
  • Check to see that the brake fluid is at the appropriate level and that there are no leaks.
• Air Conditioning That Doesn’t Keep You Cool
  • It’s possible that you’ll need to add more refrigerant.
  • Check the compressor to see if it starts working when you switch on the air conditioning.
  • It’s possible that the cabin filter is blocked and needs to be replaced.
• Problems with the Steering (being Stiff, Making Noises)
  • Check the levels of the power steering fluid, and search for any leaks.
  • Examine the components of the steering system for signs of wear or damage.
• Messages Displayed on the Dashboard:
  • OBD-II Scanner: Use an OBD-II scanner to retrieve fault codes, which can provide specific information on issues.
• Concerns Relating to the SBC Brake System
  • This model has a Sensotronic Brake Control (SBC) system, which can be problematic. If you get warnings about brake pressure or performance, get the car checked immediately.

FAQs

Which engines are available for the W211 E-Class?

The W211 E-Class offered a variety of petrol and diesel engines, from four- cylinder options to powerful V8s, including models like the E200 Kompressor, E220 CDI, E280, E320, and E500, among others.

Is the W211 E-Class rear-wheel drive?

Yes, the W211 E-Class primarily came with rear-wheel drive, but there was also a 4MATIC all-wheel-drive option available.

How do I know if my W211 has the SBC brake system?

What kind of transmission does the W211 have?

The W211 came with various automatic transmissions, including 5-speed and 7-speed (7G-TRONIC) variants. Some models also had a manual transmission option.

Is it expensive to maintain?

As a luxury vehicle, maintenance can be more expensive compared to more standard cars, especially if using dealer services. However, regular maintenance can prevent larger, more costly issues.

What should I check for when buying a used W211 E-Class?

Look for service records, check for rust, test all electronics, inspect for any fluid leaks, and consider getting a pre-purchase inspection from a mechanic familiar with Mercedes-Benz vehicles.

Does it come with air suspension?

Some models, especially the E500 and E55 AMG, came with AIRMATIC air suspension. It offers a comfortable ride but can be expensive to repair if it malfunctions.

How do I update the COMAND system (infotainment and navigation)?

You can order updated navigation DVDs from Mercedes-Benz or authorized dealers. For major COMAND system updates, you may need to visit a dealership.

Is the W211 E-Class reliable?

The W211 E-Class has faced some criticisms for issues like the SBC brake system or rust. However, many owners find them reliable, especially if well- maintained. Later models (post-2006) tend to have fewer issues.

Does it have Bluetooth connectivity?

Later models of the W211 came with Bluetooth connectivity, but earlier models might need an aftermarket module or upgrade for this feature.

How can I improve fuel efficiency?

Regular maintenance, using the recommended grade of fuel, and ensuring tire pressures are correct can help improve fuel efficiency.

Can the W211 E-Class run on premium unleaded fuel?

Yes, many of the petrol engines in the W211 E-Class require or recommend premium unleaded fuel for optimal performance and efficiency.

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