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Driver's seat airbag malfunction light

5210 Views 1 Reply 2 Participants Last post by  toyomoho
I drive a Toyota Sequoia 2004. The airbag light started blinking a few days back.

Sometimes, I can switch the engine off, adjust the seat, and the light comes off (i.e, the airbag system is now engaged). Often, the light will again start blinking and keep blinking.

So I took it to the dealer for a diagnostic. They showed a P0116 Driver's seat airbag malfunction NOTES SHOW:
- open in circuit. inspected #2 floor wiring harness -OK
- inspected airbag sensor assembly module - not malfunctioning at this time.
- inspected airbag assembly - no open circuit found.

Reset air bag light - no codes found at this time.
If light reappears, need back assembly $2599 (NEW DRIVER"S SEAT!).:confused:

The light is blinking again, and replacing the entire driver's seat seems very pricey to me. The re-setting of light to me indicated some lose wires, but the dealer's service dept. doesn't see it that way.

Has anyone else with a Sequoia or a Tacoma faced this issue?
Any advice?

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If the problem occurs when moving the seat there could be a wiring problem. A wire the breaks the circuit or opens (disconnects from the circuit) will trip the trouble lights.

When you readjust the seat the wire may now reconnect and the problem goes away.

The ABS computer checks the circuits each time the car is started.

Suspect it may be a problem with a electrical wiring plug. A harness runs to the area under the seat, electrical plugs then attach this wiring to the seat. This allows the seat to be removed and disconnected from chassis wiring.

You might do a little probing under the seat to find the wiring area where if you push or pull it causes the problem.

The dealer could also do this but may just want to sell you a complete harness.

This issue is no differant then having an intermittent loose wire that causes an ign or light problem. However in this case the problem causes the airbag computer to trip a code.

Unless you start applying electrical power to the airbag wiring there is no chance of firing the bags.

Perhaps an auto electrical shop could look at the car.
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