How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Pete Your Own Question
Pete, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 27813
Experience:  Over 15 years experience as a Mercedes dealer technician
Type Your Mercedes Question Here...
Pete is online now
A new question is answered every 9 seconds

2008 C350 does not start. Battery is at 12.3V. Radio, head

Customer Question

2008 C350 does not start. Battery is at 12.3V. Radio , head lights , they all work. When I turn the key no engine light or any other one lights up in the dashboard
Submitted: 1 year ago.
Category: Mercedes
Expert:  Pete replied 1 year ago.

Hi my name is ***** ***** I will be happy to assist with this today.

One common component I have seen cause this issue here is the electronic ignition switch itself in some cases.It can short out/fail internally causing this fault here needing replaced.If nothing electrical was done on the vehicle recently and you know for sure the battery is good (as sometimes the battery can have good voltage but not enough amperage to allow starting of the vehicle) this sounds like the cause here.

The first thing that will have to be done here is to have the fault codes read out of all computers using a scan tool that will plug in and communicate with all computers to see what codes are set.Then from there the codes can be diagnosed to locate and correct this fault here.

It is possible this is a loose power connection to one of the fuse panels or one of the SAM control modules as well but most common is usually the electronic ignition switch.

Thanks Pete

Related Mercedes Questions