Checking your heated steering wheel
Heated steering wheel is connected to front seat switch, so everytime you select to heat your bottom it heats your hands too, but usually after few years it stops working, if you were lucky and under warranty you got free replacement, mine failed after warranty expired .
Before you remove airbag you need to disconnect negative battery , otherwise error will record in Airbag module and you won't be able to delete the code.
Tools that you will need is
- T25 Hex key
- Digital Multimeter
I have removed my steering wheel, but you don't have to , the test can be done without removing of steering wheel
Using T25 insert into the back of the steering wheel and carefully unbolt the screw, do not rush take your time, it is very easy to strip this bolt .
and do the same on the other side of the wheel,
Location of the porthole where you insert the hex key
While turning your t25 hex key you will notice your airbag separating from the wheel , just hold it so doesn't fell out,
once you reach a point when your tool turns without resistance then you can separate the airbag from wheel do not pull it out completely, there is wire attached to, do it slowly, there is a yellow plug connected to airbag, disconnect it and put your airbag in safe area,
the heating element l is located in the bottom of the steering wheel, if you don't have this then you do not have heated steering wheel
In order to verify if the coil is bad you need to disconnect the 4 pin white plug, press the tab and pull it out
the two black wires are your heating element coil and the bottom thin gray wires are your temp verification coil
now using digital multimeter set to 2000 ohmmeters, you can verify if the probes work
without touching two probes the reading will be 1 on the display
once two probes are connected it shows zero on digital display means the flow of current between probes
Now the the next step is to insert probes into the 4 pin white plug
Insert each probe into each plug I started with thin two gray wires first and I checked the multimeter and it shows the flow of current through entire wheel it will read 15-25
next insert probes into two black wires on 4 pin of white plug, and check the display and I had no reading,
one of my friends checked his heated steering wheel since it was working and he did the test for me just to check if this in deed works and it was working it was showing positive reading
heating element of the coil is burned out somewhere in the steering wheel, and you can't repair that, the wheel needs to be replaced
if in case you get good reading on both wires then possibly this little board is bad,
I have tested this board applied 12v to the two pins and it was working .. but in most cases the coil inside the wheel is burned out
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Originally Posted by mat68046
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