[clibrary]

Hi

MOT due soon. Will this problem mean a fail ?

I understand there is a sensor on each axle, plus a control unit just to the right of the battery (looking from the front). Can anyone advise what needs to be done to trace the exact source of the problem ?

Thanks, Mike

 

[Mimmi]

TECH2.

 

[mstrjon32]

Are the lights aimed nearly correctly in spite of the failure, or are they pointed all the way down? You may be able to get away with a safety inspection if they're at least aimed properly, but I know over here if they see the warning message you're likely to fail regardless. Unless you maybe know someone... 🤔

 

[swedespeed7]

Hi

MOT due soon. Will this problem mean a fail ?

I understand there is a sensor on each axle, plus a control unit just to the right of the battery (looking from the front). Can anyone advise what needs to be done to trace the exact source of the problem ?

Thanks, Mike

I'm not positive, but I highly doubt a cornering malfunction would cause a MOT fail - cornering headlights aren't required for your vehicle (or possibly any vehicle yet, I imagine). I don't live in UK though.

 

[mstrjon32]

I'm not positive, but I highly doubt a cornering malfunction would cause a MOT fail - cornering headlights aren't required for your vehicle (or possibly any vehicle yet, I imagine). I don't live in UK though.

Issue is leveling, not cornering. I also don't know about UK but over here (and I'm guessing over there in the USA) they definitely check the beam shape and the aiming for compliance.

 

[mstrjon32]

And yes, to answer more explicity what needs done to fix it, you need a Tech2 to diagnose where the fault is. You can start by checking that the level sensors are at least attached and connected on the (UK offside) front and rear control arms, though.

 

[Black08AERO]

The sensors are in left and rights side of the rear seat behind the interior trim by the way. Not a lot of fun to get to.

 

[swedespeed7]

Issue is leveling, not cornering. I also don't know about UK but over here (and I'm guessing over there in the USA) they definitely check the beam shape and the aiming for compliance.

Headlamps can still be manually leveled with the adjusters

 

[Mimmi]

The sensors are in left and rights side of the rear seat behind the interior trim by the way. Not a lot of fun to get to.

Nope.
Only 1 sensor in each axle.

 

[swedespeed7]

The sensors are in left and rights side of the rear seat behind the interior trim by the way. Not a lot of fun to get to.

Yeah I have no idea what you're talking about. Not headlight related though

 

[Black08AERO]

Yeah I have no idea what you're talking about. Not headlight related though

Yeah I have no idea what you're talking about. Not headlight related though

The Yaw system sensor is in the left and right side of the car in the rear behind the trim panels. The Saab Tech said they are headlamp related. It picks up left and right cornering.

 

[Black08AERO]

Nope.
Only 1 sensor in each axle.

You're incorrect. There is a yaw sensors in both side of the Aero Convertible. It's not a question. The Saab shop ( Gorecki Saab) explained their function. It also says Yaw on the box.

 

[mstrjon32]

Yaw sensors

You're incorrect. There is a yaw sensors in both side of the Aero Convertible. It's not a question. The Saab shop ( Gorecki Saab) explained their function. It also says Yaw on the box.

In fact you are incorrect--yaw sensors having nothing to do with headlight leveling. There is one sensor per axle, offside on a UK car. They are attached to the control arms. From the WIS:

 

[Black08AERO]

Yaw sensors


In fact you are incorrect--yaw sensors having nothing to do with headlight leveling. There is one sensor per axle, offside on a UK car. They are attached to the control arms. From the WIS:

View attachment 290850

I stated they aren't on the axle. Fact. I also relayed the information from the Saab Dealer Tech. I noted them in the interior of the car when I pulled the trim to wire the stereo. The Tech may indeed be incorrect. My correction was where they are in an 08' Aero convertible.

 

[aerojon]

the yaw sensor is located in the center console/tunnel by the gear shift

 

[Black08AERO]

the yaw sensor is located in the center console/tunnel by the gear shift

No, Jon. It isn't.. Not in a US based 08 aero convertible.

 

[Mimmi]

So, you know better and you should ignore us.

 

[Black08AERO]

So, you know better and you should ignore us.

I am ignoring your statement. You're wrong. Do the yaw sensors on both sides of the rear seat in the quarter trim have any connection to the headlamps? I don't know this to be fact. . I noted what the local Saab mechanic told me and you may be 100% correct as to their function. Where they are is not up for contention. There are sensors that are marked YAW on both sides of my Aero Convertible. A simple fact.

 

[Mimmi]

I highly suggest you learn facts and stop telling lies that "local Saab mechanic" told you.



It is so funny that I do not have the "YAW" sensors where you said they were.

I've also never come across those "sensors" in any Saab I've come across.
Either Saab (ORIO) do not recognize those "sensors".

 

[mstrjon32]

All cars have sensor in this location.

According to WIS, the B284 with manual gearbox has a sensor with two elements to measure longitudinal acceleration in addition to lateral acceleration. But, it still shows it as a single sensor module.

Oddly, EPC shows two part numbers that differ on the model based on if it's XWD or not, and nothing discrete about the B284/manual combination.

But, none of the diagrams show a second sensor, nor do they show a location other under the center console.

🤷‍♂️