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
   Specifications
   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











Anticreeping alarm system

Activation of the anticreeping alarm system

Illustration for the car with the motion sensor in salon (IMS), a code 882

A26/14 — the IMS Transceiver
B33 — the Sensor of an inclination of the anticreeping alarm system (ATA)
H3/1 — the Siren with the additional battery
N10/6 — the Left forward SAM
N10/7 — the Right forward SAM
N10/8 — Back SAM
N70 — the Control unit of the top console
N72/1 — the Control unit of the top console

N72/1s7 — the Switch indicator of work of ATA, IMS and the sensor of towage (TS)
N73 — the Control unit an electronic ignition/starter
S62 — the Switch of opening and closing of a cowl (ATA)
S17/3 — the Switch of the left door
S17/4 — the Switch of the right door
S17/5 — the Switch of the left back door
S88/3 — the Secret microswitch of closing of a cover of a luggage compartment
S17/6 — the Switch of the right back door

Anticreeping alarm system


ATA is activated from:

- The uniform lock with PDU;
- The uniform lock with the lock switch (the USA, Japan);
- Repeated closing;
- Locking with KEYLESS GO system (only a code 889);
- Self-activization (Belgium): In two minutes after the last locking if the driver's door is open and it is again closed after extraction of a remote key;
- ATA is not activated at an open driver's door;
- Activation of ATA interrupts the previous alarm system;
- At repeated giving of a food of ATA automatically реактивируется if it was active to food interruption of supply;
- IMS and TS can be switched off separately.

Sequence of work

The EIS control unit (N73) gives command for CAN for car locking. The left forward SAM (N10/6) transfers the message «to ATA is active» on CAN. Then the mentioned control units activate their entrances of the alarm system.

Siren activation with the additional battery (H3/1)

The left forward SAM (N10/6) activates a siren (H3/1) via the direct tire of data.

Activation of contact to an external surface

Back (N10/8) and left forward (N10/7) of SAMактивируют alarm system entrances to which contacts of doors are connected. The entrance is activated after, at least, 10 seconds of an inactive condition.

Other functions

When receiving by back SAM (N10/6) of the message on locking of all doors and trunk lids, also are activated by TS and IMS (if they were not switched off previously).

Feedback at successful activation

At active the ATA control unit of the top console (N72) causes a light-emitting diode blinking in TS, IMS and ATA switches indicators (N72/1s7) with frequency of 1 Hz.

Activation of the sensor of towage of TS

Forward left SAM (N10/6) transfers to back SAM (N10/8) team of activation of TS. The entrance of TS is activated by back SAM after, at least, 10 seconds of an inactive condition.

Only code 882: Motion sensor activation in IMS salon

Forward left SAM (N10/6) transfers team of activation of the IMS transceiver (A26/14) to the control unit of the top console (N70). The control unit of the top console directly activates the module via the tire of data. The module displays the availability for service.