Skip the auto shop - Our mechanics make house calls

Q: Unsuccessful dealership repairs for stereo/navigation system

asked by on

It must be 30 times that I have been to the Mercedes-Benz dealership. They either can't fix the problem or else they are swapping car parts around and thus I have a continued problem with my stereo/navigation system. About once or twice a month, sound doesn't come out of the left-side speakers. It is always the left side only. One thing that does solve the problem is to restart my car and let it sit for a few minutes (or sometimes hours) after which the sound will return. But what a pain and loss of time.

Twice the dealership has changed the headunit and the amplifies - but the problem still persists and last month it broke again. The mechanic replaced the headunit once again, but I found out that he installed a "Remanufactured" unit!! I didn't know that Mercedes-Benz uses refurbished parts. After getting my car, the navigation system broke down while driving home. I called the Mercedes-Benz representative and was told they don't make new parts for headunits. They haven't responded further, for three weeks, regarding my inquiries that I want a 'new' unit. I'm thinking the stereo problem is not with the head unit because that was replaced before and it never solved a thing. Can you please give me advice on what to do in order to get this problem repaired and fixed? Thank you.

A: Thanks for writing in about your 2001 Merce...

Thanks for writing in about your 2001 Mercedes-Benz E430. If the issue is only on the left side and both the amplifier and head unit have been exchanged, the issue is most likely in the wiring between the amplifier and head unit. Continuity of the wiring needs to be checked, and the connector ends need to be looked at. Hooking up a scope to observe the signal both leaving the head unit and entering the amplifier for the left channels should be looked at to see if there is any time that the signal drops off either at the head unit or amplifier. Have a certified technician, such as one from YourMechanic, diagnose your electrical system and assist you with the appropriate repair.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I decline a phone call through the infotainment system?

When a paired device receives a phone call, a ring tone will be heard through the vehicle’s sound system. If the infotainment system is currently in use, the audio will be paused, and the ring tone will be heard. To...

Q: SHOULD YOU CLEAN UNDER YOUR HOOD

Using a power washer under your hood is not necessarily a good idea. The pressure behind the water can easily force it into wiring connectors or electrical components, and can cause corrosion and failure of these connectors and components. You...

Q: Curious as to if it is a common practice to but a 'new vehicle' with a tire that has been patched multiple times?

I hate to say this, but dealerships tend to take the easy way out. I would recommend you ask the dealer to replace any tire with more than one patch. Depending on the vehicle, the tire should only cost them...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.