Skip the auto shop - Our mechanics make house calls

Q: My car alarm no longer flashes when activated

asked by on

I own a 2004 Subaru Impreza WRX. The alarm no longer flashes when activated. Would replacing the Security Unit Module fix this?

Hey there, thanks for writing in about your 2004 Subaru Impreza WRX. If you replace the security module, it will most likely fix your the alarm, but you will need to reprogram the keys to get the new alarm to recognize your old keys. Get in touch with a local Subaru dealer in order to verify which component should be fixed.

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: Hitting the gas pedal stalls the motor

When the car almost stalls, does the Check Engine Light illuminate? If so, a local mechanic (like those with YourMechanic) can diagnose the problem by scanning the vehicle computers for codes. This could be caused by an electrical problem (oxygen...

Q: How does the security system work in a 2012 Honda Accord?

If your Accord has a security system as a standard feature (all but LX models), you have built in anti-theft protection. The system is designed to flash the lights and honk the horn if someone tries to enter the vehicle...

Q: Crank no start

There are several possible reasons for a vehicle to crank and not start. A bad fuel pump, clogged fuel filter, faulty injectors, bad ecu, failed ignition coil, or a malfunctioning sensor. It will first be necessary to figure out if...

Related articles

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...
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.