Skip the auto shop - Our mechanics make house calls

Q: Power locks orthopedic seats

asked by on

My 300E was working great until I got the oil changed. Now my power locks and air operated orthopedic seats don't work. The air pump doesn’t come on either. Do you think there is a connection between the oil change and these problems that just arose? I can’t hear the air pump come on when I turn the key as usual. What do you think happened? How can I fix these problems?

A: Both of these systems are controlled by fus...

Both of these systems are controlled by fuse 'A' in the electrical center of your 1990 Mercedes-Benz 300E. If this fuse is blown it would prevent both the locking and orthopedic seats from functioning. I doubt it was related to the oil change - this was most likely coincidental. But if replacing the fuse does not fix the issue, then you may have a direct short to ground somewhere so the wiring would need to be traced. If this becomes the case, you may want to enlist the help of a mechanic, such as one from YourMechanic, who can diagnose and restore your power locks and seats.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car runs rough and had sudden power loss

Hi there, thank you for asking about your 1983 Nissan 280ZX. It is actually possible that it is a fuse issue. However, the fuse holder is on the circuit board for the digital dash and is a bit sensitive. If...

Q: How do I use the keyless access system to unlock the car?

If your vehicle is equipped with the keyless access system, then you will be able to unlock your vehicle without using the keys. To use the keyless access system, you need to have the remote keyless entry (RKE) transmitter within...

Q: Heater malfunction - 1997 Ford E-150 Econoline Club Wagon

You need to have the heater air conditioning case checked to see if the actuator for the temperature blend door is moving when you move the temperature from cold to hot. Also check to see if both heater hoses are...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...