Just bought "babied" 1991 Mercedes 300E 4-matic and everything worked. Took it to get oil changed. Now door locks and air ortho seats do not work. Air pump not come on. Suggestions?

Asked by Ewaldenberg Sep 18, 2015 at 05:04 PM about the 1991 Mercedes-Benz 300-Class 4 Dr 300E 4MATIC AWD Sedan

Question type: Maintenance & Repair

Just bought a mint 1991 Mercedes 300E - everything worked until took for
oil change.  Now power locks and air operated orthopedic seats do not
work.  Air pump does not come on.  Could there be a connection between
this and anything they would do during oil change?  Any tricks, suggestions
without spending $300 to diagnose?  Just cannot hear air pump come on
at turn of key as usual.  Thanks

5 Answers
44,775

jamnblues answered 8 years ago

There should be no correlation, but who knows what happens when guys get under the hood- anything is possible- the timing is suspicious- just take it back to them and see if they knocked something loose-

1 people found this helpful.
Mark helpful

Ewaldenberg answered 8 years ago

By saying "no correlation" do you mean that there is no correlation between the air powered locks and the air powered ortho seats? Or are you saying no correlation with the oil change? I just thought that there may be a common failure of the air pump and/or its controls that happens with these models. Thanks for response

Mark helpful
6,625

Mick answered 8 years ago

Take the air pan off the top of the engine and have a look for a loose or disconnected vacuum hose.

Mark helpful

F_O_R answered 8 years ago

I doubt there is any relation between the oil change and the problems you are having.

Mark helpful

Your Answer:

Related Questions

300-Class

Looking for a Used 300-Class in your area?

CarGurus has 4 nationwide 300-Class listings starting at $29,999.

Postal Code:

Shortcuts

Search Mercedes-Benz 300-Class Questions

CarGurus Experts

  • #1
    James Ramond
    Reputation
    310
  • #2
    Paul
    Reputation
    300
  • #3
    Storm_2308
    Reputation
    260
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Mercedes-Benz 560-Class
1 listing
Used Mercedes-Benz SL-Class
7 Great Deals out of 110 listings starting at $13,888
Used Chevrolet Corvette
28 Great Deals out of 646 listings starting at $10,989

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.