Skip the auto shop - Our mechanics make house calls

Q: Car won't start, can't be jump-started. 2008 BMW 535xi

asked by on

I cannot start the car at all. I think that the battery is not the cause as all electrical components in the car are working properly. Both the outside and inside lights work. I tried to jump the car but it's unresponsive. The issue occurred out of the blue and I've never had any problems before. Do you have any idea what could be causing this?

A: Hey there, thanks for writing in about your...

Hey there, thanks for writing in about your 2008 BMW 535xi. A no crank, no start condition indicates a problem with the starting system. This could be the starter itself or the starting circuit. In your vehicle, power to the starter is directly controlled by the car access system module. This module decides when to activate the starter based on inputs from the transmission module (clutch module of you have a manual), start button and different parts of the anti-theft system. If power is not getting to the starter, it's likely because the module is not receiving a proper signal from one of these items. If you'd like to have this checked, I recommend you have a professional, such as one from YourMechanic, inspect the starting problem firsthand and perform the correct 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・Save up to 30%

Get a quote

What others are asking

Q: Car steaming and leaking radiator fluid

I’m not sure what repair was done, but it sounds like a coolant hose was left loose. Do not drive the car with a major coolant leak. It will overheat very quickly. If the shop is a reputable one, they...

Q: Everytime I shut the truck off, get out 15-30 the driver's parking light and tag lights come on. Very dim though. Why

The Totally Integrated Module may be turning on the lights after you shut down. You should have the system scanned and have the module tested for problems internally. You should replace the component if it's still causing the problem. The...

Q: Alternator not charging battery

It sounds like one of your cables is corroded or shorted out. If the connection is not strong between the alternator and battery the car will die while driving and be unsafe. Until the repair is performed, caution is recommended....

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...