Skip the auto shop - Our mechanics make house calls

Q: Truck alarm prevents truck from starting.

asked by on

The truck won't start and the alarm has been set off. This has happened several times in the past two years. The valet switch isn't overriding the alarm. I've tried holding it down for two seconds, let go of the switch and hold it down for another two seconds with the key in the ON position. I've read through the manual several times and I don't know where to go from here. This has been incredibly frustrating. Any help is appreciated. Thank you.

My car has 138000 miles.
My car has a manual transmission.

If this is for an aftermarket alarm problem then hold button in and then turn on the key at the same time. Hold for 5 seconds and see if alarm is turned off. If it is still on with small blinking light the you will need to remove the system and put wiring back to original connections.

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: After unlocking the car from the drivers side, if the passenger door is opened before the key is put in the car the alarm goes off.

The key should only unlock the driver door with one turn and unlock all of the doors with two turns. If the passenger door is unlocking when the driver door is turned with one turn or if the alarm is...

Q: Where is my turn signal relay and hazzard fuse and or relay located on 2001 2wd ford explorer sport trac

Hi there. The hazard relay is located in the dash behind the radio. You will have to pull out the radio or reach up under the dash to locate the relay. The location for the turn signal relay would be...

Q: Radiator is leaking

If your radiator is leaking then it needs to be replaced. Hopefully the engine never got too hot when this loss of coolant occurred. Once the radiator is replaced I would typically do a cooling system pressure test to make...

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...