RepairPal is your advocate for car care advice and guidance

Q: Power door locks and trunk lock on 1996 Mercedes-Benz S420

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
My power locks and trunk won't lock. I have to manually lock doors and strap trunk down. I checked all the fuses and changed the battery. What else can it be?
| |
the doors locks and trunk soft-close are both controlled
by electric vacuum pumps. central lock pump is under the rear seat and the trunk closure pump is in left side of
trunk. either bad pump or a leak somewhere in the vacuum
hose nightmare.
what is the next step to fix this issue. i have the same issue with my s420 Benz. It just don't work after the head light goes out than I replace the head light. I don't understand it at all.

any advise please?
Didn't find what you were looking for?