Q: How to remove and refit the oil pressure switch for the warning light for 1.6 litre SOHC petrol engines on 2016 Audi A3?
A: In order to take out the oil pressure warning light switch, find it on the left side of the oil filter house, unplug the wiring and wipe the area off. Take off the switch and its sealing washer. Examine the washer, refit the switch, reconnect the wiring and verify the level of engine oil.