Q: Anti-theft preventing car from starting

asked by on September 06, 2016

I just bought a van and it would not start after I got it home, the head lights would flash off and on like the hazards were on or something but they were not I opened the hood and found the fuse to the anti theft it's a 7a fuse and pulled it. The van starts but some stuff won't work like the windows and the heater so to roll the windows up we have to put that fuse in and it does the same thing light flash on and off and then we roll up the windows and then pull the fuse and start the van. What is the real issue and how do I fix it what is wrong with it
My car has an automatic transmission.

Electric Problems Inspection $94.99 - $114.99 Get a Quote

Hello. The first thing I would do is try to reset or disable the anti-theft system. This can be done by locking the doors with the power lock, and closing all the doors and the trunk.

Then you wait 30 seconds and unlock the driver door, but do not open it. Once the driver door is unlocked, you wait another 30 seconds before you open the door.

This should reset the anti-theft system. If the issues persist, then it may be possible that your vehicle is experiencing some sort of wiring issue. If you need help with a diagnosis, have a professional technician inspect the electrical circuits more thoroughly in order to have this corrected.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Battery dies over and over, works when jumped
If your battery is not working properly, it could cause a strain on the alternator. On the other hand, if the battery cable ends that connect to the battery are not making good contact to the battery, it could cause...
How Can I Tell If My Car Isn't Shifting Correctly?
The automatic transmission in most vehicles are designed to shift the gears for us rather than use a manual transmission and a clutch with a stick shift to change gears. If you have driven a manual transmission before then you...
How do I secure the floor mats in place?
Certain floor mats are designed to be used on specific models. They should be secured in place so they don’t move around. Attach the floor mat by putting the retaining hooks into the eyelets on the floor mats. To secure...
Coolant blowing out tailpipe
Hi there. A coolant leak on the these GM vehicles is common due to failures in core plugs. Core plugs are holes where block castings are filled from, and sealed to keep coolant in. I would have a certified mechanic...
Ticking noise
Hello there, a few different faults can cause the vehicle to have this ticking noise. The most common faults would include an issue with the flywheel, belt tensioner (https://www.yourmechanic.com/services/drive-belt-tensioner-replacement), alternator (https://www.yourmechanic.com/services/alternator-replacement), water pump (https://www.yourmechanic.com/services/water-pump-replacement), or engine mechanical issue. I'd recommend...
AUDI A3 1.6L - Engine overheating and temperature needle starts above minimum
Hi, thanks for writing in. It is possible that you could have a faulty water pump (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-water-pump). The water pump is designed to circulate the coolant through the engine. The water pump has an impeller inside of it and it...
Alarm goes off randomly once or twice daily
Hi there. Deciding to replace or repair your vehicle is a decision you'll have to make. From the description you have provided, it may be that the only problem is a bad battery (https://www.yourmechanic.com/services/battery-replacement). When a battery has a sulfur...
My car jerks at 45-50 mph during acceleration, and then it smooths out.
Hi There, The jerking reaction (https://www.yourmechanic.com/services/car-jerks-forward-at-high-speeds-inspection) you are describing may indicate a dirty or failing mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) which is a unit that monitors air intake and relays this info to the ECM which then makes adjustments to...
When I put my van into drive or reverse it doesn't move. But while in drive or reverse if I rev up the engine it will start to go
Hi There, This may be a sign of low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...

Related articles

4 Essential Things to Know About Your Car’s Tail Lights
Tail lights are red lights on the back of a vehicle. They are turned on whenever the head lights are...
How Long Does a Fuse Last?
The The electrical system that is on a car plays a large role in ensuring that everything is running efficiently. There are a number of different things in a car that will require a constant supply of electricity. In order...
How to Dispose of Car Batteries
Car batteries have chemicals which can damage the environment. Dispose of car batteries at a battery recycling center or a local auto supply store.