Directed Electronics Auto mate 552 Installation Manual page 26

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type E: mercedes-benz and audi (1985 and newer)

These door locks are controlled by an electrically activated vacuum pump. Some Mercedes and Audis use a Type

D system. Test by locking doors from the passenger key cylinder. If all the doors lock, the vehicle's door lock

system can be controlled with just two relays (optional). The control wire can be found in either kick panel and

will show (+)12V when doors are unlocked and (-) ground when doors are locked.

To interface, see the diagram below. The system must be programmed for 3.5 second door lock pulses. (See

Operation Settings Learn Routine section of this guide.)

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