SPONSORED LINKS

Central lock system

Tiny
CHARLES PIUSON
  • MEMBER
  • 1999 MERCEDES BENZ ML320
  • 15,234 MILES
When I lock from the driver's door of ml 320 Mercedes Benz the other doors do not lock and yet if I press the central lock button in the car all doors lock up together what might be the problem with the central lock system of the car. How is a central system of that car controlled. How many relays does it have and where are they located, how are their connected to one key lock at the driver' s door?
SPONSORED LINKS
Tuesday, May 10th, 2016 AT 3:06 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hey CHARLES,

It sounds like you have a problem with the door key switch which has connects that control the other doors. There are no relays just a central controller. Here is a wiring diagram, I would start at the drivers side door lock switch first

Let me know how it goes

Best, Ken
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, May 11th, 2016 AT 7:22 PM

Please login or register to post a reply.

Related Door Lock Switch Content

VIEW MORE

Sponsored links