Q: Car won't start; theft light on

asked by on

My car starts sometimes, but other times it cranks but won't turn over. It has a new battery. The theft light is blinking.

The anti-theft system may be experiencing a fault, and in most cases, will store a code pointing to the problem component. Your symptoms are also close to those of a failing starter assembly. In this case, the vehicle may start intermittently while on other occasions nothing happens when the key is turned, but the vehicle lights and the dashboard operate correctly. I recommend having an experienced technician verify the situation and inspect the starting system as well as your car’s anti-theft.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Car won't start; theft light on

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: Q: Shifting

It sounds like your vehicle's transmission is not shifting properly. Check the level of transmission and fluid condition. If the fluid level is low, that will cause shift difficulties. If the fluid is discolored or has a burnt odor, that...

Q: Car radio and odometer will not shut off.

Hi there. Find the power source to the radio and see where it is leading within the dash. It is possible that the wires may have a short within each system. This will cause the load on the battery when...

Q: Ignition replacement 2004 Jeep Grand Cherokee

Hello - the new keys and the security transponder which reads them must be programmed to be "in sync" with each other. You may also find that holding one of the old keys near the dash, while turning the ignition...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.