Skip the auto shop - Our mechanics make house calls

Q: Red light showing a car with a lock is on?

asked by on

Red light came on and now the car won't turn over. Red light is a car with a lock.

My car has 146000 miles.
My car has a manual transmission.

A: Hi, thanks for writing in. I'd be happy...

Hi, thanks for writing in. I'd be happy to help. This is your car immobilizer light that indicates the car is armed. The immobilizer, usually called Securi-Lock in Ford vehicles, is a passive anti-theft device that disables your vehicle’s ability to start without the key. If the car will now not start, this means there is something that has caused the immobilizer to be armed and not unarm itself when the key is present. After your vehicle is turned off, it’s normal for this light to continue flashing until you start it again. Also, if your vehicle is equipped with an alarm system, then this will sometimes mean that the alarm is active, if there isn’t a separate symbol for it on the dashboard. If this does not go away with your key being present, you will need to take it in to the Ford dealership to have the immobilizer shut off. Hope this helps and best of luck.

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: Transmission issue after a long drive

A few different faults can cause rough shifting after the vehicle warms up like this. The most likely would be the transmission fluid level, transmission filter, shift solenoids, torque converter, or the transmission linkage. Any of these, once warmed up,...

Q: Cad wont go faster than 35mph

Hello. From what you describe it would appear that some sort of serious issue may have occurred. If you've found oil all over the engine I would try to figure out where it came from. It is likely that an...

Q: Rpm's started to rise to around 1400 when idling and a dash message lit up saying reduce engine power.

Hi there. Check the idle air control valve (IAC) on your vehicle. This valve is what controls the idle and is most likely stuck or has failed. When turning off the vehicle and then turning it back on, the valve...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...