I've got a 2000 Audi A6 Avant Quattro with the 2.8L ATQ engine. Been trying to resolve some AC issues and latest diagnosis shows it to be a faulty AC pressure switch. The switch is on a line coming from the condenser on the passenger side. Easy to access with the passenger side headlight removed. Part is arriving tomorrow and just wanted to check if anybody has replaced one of these before and may have some advice before I start this project. I've already done the engine coolant temperature sensor and the auxiliary coolant fan sensor and got those done successfully. Hoping this one will be easier. Based on the picture of the sensor and looking at the part on my car, it doesn't look like it's held in by a retainer clip like the other sensors I replaced. So, not quite sure if it's threaded, etc. Any advice would be greatly appreciated!

 

Should be threaded on. You'll know when your new one arrives. There will be a check valve in the line so you can change the switch without losing your refrigerant.

Bob