Skip the auto shop - Our mechanics make house calls

Q: 2003 Mercedes C240 will not start

asked by on

I have a 2003 Mercedes-Benz c240. I was driving & all electronics shut down. Replaced alternator & it won't start. All electronics are working, battery is fully charged. It does turn over, tho.

My car has 210000 miles.
My car has an automatic transmission.

At 210 thousand miles, it really could be just about anything. If the alternator wasn’t charging and you drove the car until the battery voltage went so low that it cut off, there are probably a zillion codes stored in the computer. The trick is to read the codes and decide what is relevant. You need to have a technician scan the car for codes, clear them, and then try to start the car. After that, any trouble codes that result will be associated with the no start condition. The self diagnostics on your car are pretty sophisticated, so it shouldn’t be to hard to figure it out from there. By contacting Your Mechanic, you can have a technician come to your home or office to check out your car and let you know what its going to take to solve it.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: My car has crank and no start issues.

There is one thing I don't think you have listed or have checked. That would be injector pulse. You can have fuel pressure but without injector pulse from the ECU, the injectors will not open and the cylinders will not...

Q: Electric motor actuator shaft

Hello there, thank you for asking about your 2013 BMW 135i. It sounds like the component the shop is describing is the camshaft timing solenoid. This solenoid is an electric motor that controls the position of the camshaft. The solenoid...

Q: I have a 2003 CTS and when I take a turn it's making like a popping noise.

The noise could be coming from the struts or the suspension. Check all of the bushings and bolts to the struts and the suspension and see if anything is loose causing the front wheels to move around when turning. Repair...

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...
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...