Skip the auto shop - Our mechanics make house calls

Q: Cranking when starting car

asked by on

My Mercedes started having a slight problem starting. It never did this before. Last week when I started my car it cranked for a few seconds. The day before I had been driving long enough for the engine to get pretty warm. Then after the engine cooled down for a few of hours I had the cranking problem. Do you know what’s causing this? Any ideas

Hello. There are a few things that could be going wrong here. The battery could have low voltage at times, causing the car to be hard to start. There could also be an intermittent problem with the starter, causing a problem with starting the car.

If the camshaft sensor and/or crankshaft sensor has an intermittent problem, this could also cause a cranking problem making it difficult to start the car. The camshaft and crankshaft sensors read engine timing and if they are not working properly, the car may not start or will be difficult to start.

I would recommend that you have the electrical system inspected, by a certified technician, like one from YourMechanic. This technician will also be able to inspect the camshaft sensor and crankshaft sensor to make sure they are working properly.

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: not starting in park

This is an indication of a failed transmission range selection switch. The information from this switch is used not only to indicate the driver's choice of gear selection for the transmission to be electronically controlled, but also is used to...

Q: Vibration in drive shaft 2011 Mercedes S550

Hi there - there is a flexible coupling in the driveshaft that connects the transmission to the driveshaft called a "flex disk" or "guibo". This disk is essentially a rubber and fiber donut that flexes as it transmits power, and...

Q: truck won't "turnover" even with new battery

Be sure any engine immobilizer system (security system) is not activated, thus preventing the car from starting. Broadly, either the starter motor/solenoid assembly is faulty or the electrical circuit supplying the motor has a fault. That circuit begins at the...

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...
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...