First read and observe the introductory information
and safety warnings 
Depending on the vehicle equipment level, the vehicle may have an anti-theft alarm and a SAFELOCK mechanism   .
The anti-theft alarm makes it more difficult to break into the vehicle or steal it.
The anti-theft alarm is activated automatically when the vehicle is locked using the vehicle key.
When does the system trigger an alarm?
The anti-theft alarm will sound an acoustic alarm for approximately 30 seconds and trigger a visible warning for up to 5 minutes if any of the following unauthorised actions are performed while the vehicle is locked:
Switching off the alarm
Unlock the vehicle using the release button on the vehicle key or switch on the ignition using a valid vehicle key. In vehicles with Keyless Access, the alarm can be switched off by gripping the door handle   .
The alarm will be triggered again if a person gains access to the same or a different secured zone after the alarm has been switched off. For example, if the tailgate is opened after a door had been opened.
The anti-theft alarm will not be activated if the vehicle is
locked from the inside using the central locking button
.
If you unlock the driver door mechanically using the vehicle key, only the driver door is unlocked, and not the whole vehicle. The SAFELOCK mechanism on all doors is not deactivated and the central locking button is not activated until you switch on the ignition (however the doors will not be unlocked).
The anti-theft alarm will not function correctly if the vehicle battery is weak or discharged.
SAFELOCK mechanism
Interior monitoring system and anti-tow alarmFitting locations overview - TV system
1 -
Display unit for control device of front display and information
control panel -J685-
Removing and installing
→ Chapter „Removing and installing radio -R-, Composition Touch and
Composition Colour version“
Re ...
Tack cloth -VAS 6177
Designation:
Tack cloth -VAS 6177-
Product description:
Tack cloth with extremely effective soft tack properties for
critical cleaning tasks. Unlike other tack cloths, this cloth
does not lea ...
Removing and installing parking aid control unit -J446-, RHD vehicle
Note
When renewing the control unit, select
Renew function for the respective control unit in
Guided fault finding or
Guided functions mode
→ Vehicle
diagnostic tester.
Removing
â ...