Airbag & AVH Lights On

Loose electrical connection on passenger seat.

 

that's an odd combination of codes....which may explain why the car has been sitting for 3 weeks.

A common airbag light cause IS a loose connector, however there are a few other sources on the airbag itself, and in some cases, in the ECU's (where it detects impact parameters and triggers).

The AVH is essentially a "hill hold"; when the car is on a slope, it automatically applies the e-brake until the car pulls away

The only common thread I can think of that might be causing both are the accelerometers (which detect pitch, yaw, roll) - that would explain why AVH isn't sensing properly AND would also trigger a fault code for the airbags.

Of course, could also be something more systemic (ECU) or annoying (a small crimp/short in the wiring harness if the 2 wires are close to each other).

As an illustration, if you had your 458 on the Daytona banking, and going slowly, the yaw sensor would think the car is in the middle of rolling over and would toss countless alerts including TCS, ABS, et al.

 

Had this issue on another car not a Ferrari. Might be the same. It was a burnt rear light bulb. Apparently the Airbag circuit was linked to the brake pedal which in turn turns on the brake lights. Since the bulb was burnt there was a different current going thru the system and this was triggering the warning light.

Replaced bulb problem gone

 

There most likely is an issue with the passenger airbag sensor in the passenger
seat.

I would have the dealer check all the connections of the passenger airbag sensor
in the passenger seat and the sensor itself.

For some reason, the AVHS error code seems to come in tandem with the Airbag error code,
although the AVHS system still seems to work, at least from my experience.

Keep us posted on the findings.

Very best

 

Glenn,

I'm glad they were able to sort it out, but man... an interior light switch throwing those kind of codes? What are the odds?!

Kind regards,

Nuno.

 

Haha Italian women! As complicated as they are beautiful

 

Looks like it was as I was saying above. Strange that they took so long to discover it.

 

As this fault goes back to a service, was their cure for free or were you charged for the "repair" ?