Skip the auto shop - Our mechanics make house calls

Q: The Battery Light is on and the lights and power mirrors are not working - 2002 Mercedes-Benz C320

asked by on

I bought the 02 Mercedes Benz C320.The battery light is on and I have no lights when turning them on with the switch however my brake lights and signal lights work allowing me to drive in the daytime. The battery for this car is alot larger and expensive.I had a technician to tell me it doesn't matter what battery is in it the lights should still work.Tell me what do you think would cause no lights to work I've never run into a problem like this.I think that small battery may be the problem then I think it may be my light switch don't know what to do very confused

My car has 120000 miles.
My car has an automatic transmission.

A: Hi. If the Battery Light is on, this an ind...

Hi. If the Battery Light is on, this an indication that either the battery is bad, the alternator is not charging properly, or both of them are bad. Low battery voltage will cause the car to do abnormal things like have no headlights. There are other things that can cause headlights to not work as well, for example, a blown fuse, broken headlight relay, or, the most common cause, blown headlight bulbs.

I suggest you have a certified technician, such as one from YourMechanic, come to your location to determine why the Battery Light is on and suggest the necessary repairs.

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: Starter needs to be replaced

I would have the battery load tested. A battery may have voltage on it but has no cranking amps left on it. If the battery comes back good then I would look at the starter. If you hear a click...

Q: My car does not start when I turn the key in the ignition but the dashboard lights turn on. Fuse keeps burning out.

Hi there. Sounds like the starter or starter solenoid has failed and is creating an overload on the electrical system making the fuse burn. Check the wires on the starter and relay and make sure that they are tight. If...

Q: Fans keep running

Hello. I would suspect that the coolant temperature sensor is faulty. The coolant temperature sensor is used to monitor the temperature of the coolant. If it is bad it can trick the ECU into thinking it is running hot. The...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...