Mercedes S-Class W-220
since 1998 release
Repair and operation of the car
+ Mercedes-Benz cars of the class S (W220)
+ Operation manual
+ Routine maintenance
+ Cooling system and heating
+ Power supply system and release
+ Engine electric equipment
- Automatic transmission
Problems of the block of electronic control and the operating signals
Search of malfunctions - the general information
Removal and the AT installation with the hydrotransformer
The AT electrohydraulic control unit (AT is established)
Dismantling and assembly of the electrohydraulic control unit
Dismantling and assembly of a plate of gear shifting
Case of transmission and hydrotransformer
Multidisk brakes of V2, VZ and gear wheel of blocking at "Parking"
Dismantling and assembly of a back hollow shaft with the back coupling of a free wheeling
Removal and installation of a multidisk brake B1 and oil pump
Dismantling and assembly of the oil pump
Dismantling and assembly of a multidisk brake of B1
Dismantling and assembly of a multidisk brake of B2
Dismantling and assembly of an output shaft with the central and back block of planetary gear wheels
Removal and installation of multidisk couplings K1, K2 and K3
Dismantling and assembly of coupling of K1
Dismantling and assembly of the leading shaft with coupling by K2 and the forward block of planetary gear wheels
Dismantling and assembly of coupling of K3
The blocking mechanism at "parking"
Removal and installation of the lever of the selector of gear shifting
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
+ Schemes of electric equipment
Search of malfunctions - the general informationAt failure detection of automatic transmission first of all check the level of working liquid (address the Section Check of Level of Oil of Automatic Transmission). If level insufficient, check all epiploons. Attentively examine all hoses concerning transmission liquid and also a cooler and to be convinced of lack of traces of leaks. The only thing that you still can independently make is to check and, if necessary, to replace the sensors concerning work of a box (temperature and turns). Before replacing any sensor, carry out reading of codes of malfunctions from memory of the control unit.
At rather serious breakage the control system of a box will pass into the mode of safe functioning, bringing at the same time the corresponding code (or codes) in memory of the control unit. Codes can be considered by means of the special equipment.
In the absence of that, define the malfunction nature (electric or mechanical).
Do not try to remove a box as diagnostics is carried out only on the box installed on the engine.