Mercedes C-Class

W203 since 2000 of release

Repair and car operation

Relay and safety locks

The majority of consumers of the electric power of the car is protected by fuses. Separate components of system of lighting, except for lamps of a signal of braking, are protected by electronic relays.

At course of too strong current electronic interruption of an electric chain of the protected components is made. Through short time the electric chain automatically again becomes isolated at repeated emergence of malfunction an electric chain again interrupts.

Apply fuses with demanded face value of a current.

Fused fuses do not repair and do not shunt a crossing point.

Establish the peregoraniye reason.

Relays take place in two blocks of safety locks in a luggage carrier, and also in an impellent compartment.

PERFORMANCE ORDER

1. Uncover the block of safety locks and take out the damaged relay by means of special nippers, for example, HAZET 4770-1.
2. Check operability of the relay and if necessary replace on new, address to appropriate section.
3. Establish the relay on a payment and close a cover of the block of safety locks.
Safety locks are located in three blocks which dashboards, are in a luggage carrier and in an impellent compartment sideways.

Block of safety locks 1

The block of safety locks 1 is from the driver, sideways at the dashboard.

PERFORMANCE ORDER

1. Depending on execution the cover (1) is taken out from the dashboard by means of a screw-driver or for a ledge.

2. Incline a cover to the left and disconnect it from the top holder.

The cover sits in the top holder very strongly therefore for its extraction the plastic wedge, for example, HAZET 1965-20 can be demanded.

3. Incline a cover further to the left, take out directing tires above and below from openings and take out a cover from the dashboard.
4. At installation insert directing tires into openings, close a cover and fix it in holders.

Block of safety locks 2

The block of safety locks 2 is in a luggage carrier behind lateral facing.

PERFORMANCE ORDER

1. Sedan: Take out a cover (1) of facing. Uncover (2) blocks of safety locks.

2. Versatile person: Release a cover (1) in facing and lower it. (2) – block of safety locks.

Block of safety locks 3

The block of safety locks 3 is on the left side in an impellent compartment under a cover.

PERFORMANCE ORDER

1. Open a cowl.
2. Uncover over the block of safety locks. For this purpose turn on ј a turn plastic screws and take out a cover from the directing tire.

3. Release clips (1), pull a cover (2) blocks of safety locks forward and remove.

4. At installation press a cover into the back tire and plant on the block of safety locks. Thus watch the correct provision of a cover.
5. Block a cover clips.
6. Put a cover over the block of safety locks. Thus the cover should enter into the lateral directing tire.
7. Fix a cover screws, having turned on ј a turn plastic screws.