Q: i replaced the cluster and disconnected the battery. when i connected everything again the theft alarm was on and car doesnt start

asked by on

i need to know how to reset the theft alarm on my Mustang 1999 v6 i replaced cluster box and disconnected the battery now car does not want to start theft light flashing
My car has an automatic transmission.

Hello, thank you for writing in. The first thing we need to determine is if this is a stock alarm or an aftermarket that was installed later. There may be a technical issue with the alarm module itself. The keys as well may need to be programmed again if there was a lock out feature tripped. If this is a stock alarm, you will need to look into your owner’s manual for more information on how it works, and how to resolve the issue. If this is an aftermarket alarm, you will need to look into the components that are supplying it with power and input signals. There is likely something wrong with the alarm’s computer or wiring. If the key needs to be reprogrammed, only the dealership can do that for you. More information is needed to proceed with diagnostics in this situation. For more help determining the issue, contact our service department.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. i replaced the cluster and disconnected the battery. when i connected everything again the theft alarm was on and car doesnt start

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: Shifter will not go into gear

Hi there. This can be an issue with your shift linkage being loose or not correctly adjusted. It also can be something malfunctioning inside of your transmission. I suggest having a certified mechanic or transmission shop take a closer look...

Q: My spider gears in the rear end keep busting. Chunk isn't harmed. What is the problem?

Hello there, thanks for writing in. The spider gears are only used when you are turning left or right, unless you have two differently-sized tires on the same axle, in which then the spider gears will turn all the time....

Q: I have a Nissan Sentra 2011 and I noticed Security Indicator Light is always on when car is locked ? Is that normal?

Hello, thank you for writing in. The anti-theft system is absolutely supposed to be on when the vehicle is off and locked. The vehicle assumes you are away from it, and at this point it needs to be protected. Your...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...