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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old July 11th, 2018, 12:53   #1
sizzlin bacon
Join Date: Feb 2014
Location: Washington
Fuel Economy: To be determined...
Default Airbag Light and Temp Sensor Issue

I have a 2003 ALH TDI Jetta Wagon and...

...I recently replaced my clock spring following the guide here on the forum. Now that it has been replaced, the airbag light still is on the dash and the replacing of the clock spring did not fix the lack of cruise control AND there is no horn still.

My other issue is intermittently, I would have the temp sensor light (red thermometer) pop on every now and then and it will make a really high pitched beeping. I JUST redid the coolant when I had it all apart (redid the flange below the vacuum pump). Is this a thermostat issue, a temp sensor issue (on the backside of the coolant flange below the vacuum pump) or something else?

What would be the recommendation on how to address the lack of a horn, cruise control, the airbag light, and the temp sensor light? I'm getting close to burning the car down and buying a gasser...

Thank you!
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Old July 11th, 2018, 15:07   #2
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Seatman's Avatar
Join Date: Apr 2010
Location: Scotland
Fuel Economy: No idea

Regarding the temp thing, I think it can be the sensor in the tank thinking the level is low. If it's temp related I often hook up vagcom and compare what the ecu says to what the gauge reads. It's like two sensors in one and half can be faulty.

Did you check the continuity of the clock spring and horn parts in the steering wheel?

I recently had an air bag issue on mine, checked the clock spring and it was fine so cleaned the contacts and it's cured it. The pins are very small so don't think it would take much to cause a bad connection.
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Old July 11th, 2018, 15:38   #3
Join Date: Apr 2013
Location: monroe nc

My fathers beetle throws a airbag light every time he drives through a rain storm. You may want to delete it and see if and when it comes back on
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