Skip the auto shop - Our mechanics make house calls

Q: Car Alarm

asked by on

Hi I currently have winter tires on my Caliber and have no tire pressure monitors on the wheels. On the dash the tpm light is on where I have no sensors on the wheels. My question is it normal for the alarm system light to come on while I'm driving? When the light comes on the tpm light goes out and comes back on and when I get out of the car and lock it with the transmitter the alarm system will not arm. Is this something to be worried about?
My car has an automatic transmission.

Hi there. The TPMS can cause multiple electrical glitches in your ECU when they are not active (such as swapping snow tires and wheels). One of these glitches can be problems with the alarm or security warning lights illuminating. The sensors on your car send a signal to the ECU to monitor systems (in the case of your TPM sensor, tire pressure specifically). However, if the sensors are gone, the ECU is still searching for a signal from them. This can cause miscommunication problems. At first glance, I wouldn’t be too worried about this glitch you’re experiencing. However, if you replace your tires with seasonal tires with the TPMS in the wheels, and this problem continues, contact a mobile mechanic to complete a check engine light inspection.

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: My auto transmission shift erratically unless I am gassing on it and then it shifts perfectly,.

What you are describing is often a sign of low transmission fluid 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...

Q: What causes shaking in 2nd gear when I accelerate

Hi There, It sounds like something may be loose when the reinstallation happened resulting in the vibration as the torque of the engine is transferred to the suspension when shifting to second gear. I would suggest having a professional from...

Q: Waterpump location and replacement - 2002 Ford Focus

The water pump is located on the front of the engine and is driven by a belt driven pulley that is turned by the crankshaft. Common signs of a failing water pump include coolant leak at the front-center of 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...
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...
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.