Mercedes S-Class W-220

since 1998 of release

Repair and car operation

W220 Mercedes
+ Mercedes-Benz Cars of a class S (W220)
+ Operation manual
+ Routine maintenance
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Automatic transmission
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Check of the electric motor of a screen wiper
   Check of warmed back glass
   Replacement of filament lamps
   Function of reserve light
   Electric safety locks
   Installation of electric and electronic devices
   Elements of the uniform lock
   Arrangement of the basic electric elements of system of electric equipment of a body of the car
   Anticreeping alarm system
+ electric equipment Cхемы

Check of warmed back glass

At inclusion of heating of back glass the field with visible lines of wires should be released after a while from a covering or snow.


1. In the presence of malfunctions check at first a safety lock in the block of safety locks.
2. If a safety lock as it should be, remove facing of back glass and check reliability of connection of the tip at glass at the left and on the right. If necessary clear of corrosion.
3. If heating still does not work, check the module of management of comfort electric equipment.

4. If conductors of a heater are torn, it is possible to use a usual current-carrying varnish for repair. For this purpose clear the damaged place a thinner or ethylene.

5. Paste over the damaged place from both parties with a gluing tape and put with a small brush a current-carrying varnish.
6. Dry paint at temperature near +25°С within 24 hours. For this purpose it is possible to apply also hot air. At temperature +150°С paint dries within 30 minutes.

 Attention! Do not include heating of back glass before paint completely will not dry. To cleaning of the damaged elements do not apply gasoline or other solvents.