Q: "Alarm system needs service" message appears on engine startup

asked by on

Occasionally, a message "alarm system needs service" appears when I startup the engine, causing the electronics such as sunroof to stop working. They told me at the dealership that I need siren module replacement. Do you have any advice?

It’s true that the siren module often fails and causes problems with the sunroof, among other things. The siren module communicates with the upper electronic module (UEM) to determine when the alarm should be sounded.

The Siren module does just what its name implies; if it’s the acoustic source for the alarm function. The siren module has an internal battery that goes bad over time and corrodes the module’s circuit board. There are other parts of the alarm system that could also cause the problem you are having, but the siren module is a very common failure. I would believe the dealer. If you’d like a second opinion, the team at YourMechanic offers expert diagnosis and repair.

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. "Alarm system needs service" message appears on engine startup

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: Car starts bit no power

Hello there, when changing engines between automatic and manual there are a few issues that can develop with your 2002 Volvo S60. Without knowing what all was swapped over I can only provide a general answer. In most cases the...

Q: Do i need to keep the brake pedal depressed during caliper removal/replacement on my Volvo S60 R as per the vida instructions?

Hi there. This step is designed to maintain forward brake pressure on the pedal to reduce the potential of air bubbles from seeping into the master cylinder and causing additional problems with bleeding brakes. However, since you need to completely...

Q: Chip needs reprogramming

Yes, if the lock cylinder was replaced, it usually comes with new keys. If the new keys have chips, a locksmith can program them to the system and you will be back on the road. If those keys are not...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...