Skip the auto shop - Our mechanics make house calls

Q: Passenger seatbelt light comes on when no passenger is in it

asked by on

When I'm driving with no one in the passenger seat (kids in the back), the passenger seat belt light flashes on and beeps. I drive a 2013 Subaru Impreza. What causes this?

In your vehicle, the occupant detection sensor detects when someone of the appropriate weight is sitting in the passenger seat. It then sends this information to the occupant detection module. The occupant detection module also receives a signal from the buckle switch regarding whether or not the occupant is buckled up. If the module detects that an occupant is present but the seat belt is not buckled, it will share that information with the air bag control module in order to turn on the seat belt warning light and sound.

Your problem is somewhere in this system, and my guess is that the occupant detection sensor or control module has failed. A trained professional, such as one from YourMechanic, will be able to inspect your electrical system and determine which part may be faulty.

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
  1. Home
  2. Questions
  3. Passenger seatbelt light comes on when no passenger is in it

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: How Does a Mechanic Check a Car Alternator's Voltage Output?

The first thing a mechanic will do is to check the battery cables to make sure they are clean. Then the battery is checked to make sure it is at the proper voltage of close to 12.6 volts, using a...

Q: How do I adjust the center lap belt?

You should always adjust your center lap belt. If the belt is too loose, you will not be properly secured in the event of an accident. If the belt is too tight, you will be in severe discomfort. Here’s how...

Q: Going through a lot of brake pads on Mazda CX-5

Hello, noisy brake are probably the number one complaint that exists. Mazda has issued two Technical Service Bulletins for brake noise, TSB 04-004/14 for brake noise and TSB 04-003/14 for rear brake noise with uneven pad wear. If you have...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
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...