Airbag light on and passenger light blinking with empty seat

My airbag light is on in my instrument panel, along with passenger seatbelt light blinking, with no one/ thing in the seat. Any of y'all know if theres anything I can do so I don't have to deal with the dealership?

 

There is a thread around here on recalibrating the passenger side seat bottom weight sensor. If I am not mistaken you would scoot the seat all the way forward then all the way back a few times. Let me see if I can track it down a link for you

 

appreciate it boss

 

I work at a BMW dealership. When we get that issue, most of the time it's a seat mat sensor. Now the sensor Toyota uses could be completely different. Not trying to scare you just let you know a possibility.

Also, what happens if you buckle the seat belt on the pass seat?

 

I’m having a different problem- my passenger light never comes on and airbag goes to “OFF”.
I’ve replaced the occupant detection ecu and reset/calibrated it, have a new buckle on the way. I doubt it’s the wiring between the seat and main airbag ECU. That would leave the main ECU.

 

Is the ecu part of the sensor?

 

I have a 2005 so I have a sensor on each corner. Those sensors and a wire from the buckle go to the occupant ecu. There’s a harness between the occupant ecu and airbag ecu. Sometime later that system was replaced with an oil filled blatter that presses on a sensor

 

"Each corner"
Is that on the seat rail?
When I put a case of beer on my pass seat it thinks there is a child seat or an adult depending on 12 ok or 30pk. Lol!

 

Yep

 

Interesting. I'm going to have to look in that more. You have sparked my curiosity.
(Famous last words)

 

I put a multimeter on the buckle wires, ohms never changed buckling the belt so figured it was worn. It’s only two wires so I don’t know if it’s a simple ground or if there’s a resistor in line. I’ll report back, definitely do a write up when I figure it out.

 

It is most likely a hall sensor. I don't remember how to test them off hand.

 

I thought something like that would need 3/4 wires

 

im fairly sure they there are different style of hall sensors.

 

So I replaced the buckle, everything works as should now. It cost about $35 new.