Q: My Mercedes 2009 CLS 550 will crank but wont start

asked by on

My car started hard cranking 2 weeks ago after sitting in the garage for a week the next week it would not start at all checked the battery and fuses everything looks good

First, try using an alternate key. If it starts easily with a different key, then the original key needs to be reprogrammed. If the problem persists with either key, then it could be the ignition switch or possible a fuel pump. If you would like help, have a qualified technician, like one from YourMechanic, diagnose the starting issue and guide with a repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My Mercedes 2009 CLS 550 will crank but wont start

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: changing steering wheel

Hi there. Unfortunately, we are unable to provide estimates on a steering wheel change since we do not perform this service. Your best bet will be to go to a Mercedes-Benz dealer and have them advise you on the possibility...

Q: I heard a pop then my 2008 Nissan Sentra started slowing down & eventually stopped.

A mechanic could identify the issue(s) in a no start diagnostic. Prior to that, check the engine oil level on the dipstick. If the level is really low, the oil may have leaked out of the engine as a consequence...

Q: I am having trouble with my key fully turning in the ignition to start. It will turn halfway and I hear a clicking noise.

Hello, thanks for writing in. The symptoms you are experiencing can commonly be caused by a faulty starter, starter relay, or ignition switch. A clicking sound when you turn the key can sometimes be caused by a faulty starter or...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...