Located by the battery on the drivers side of the engine.
The GENUINE part, in the car manufacturer's box, as sold by the new car dealer.
Part # 3C0-199-555-Q / 3C0199555 Q / 3C0 199 555 Q / 3C0199555Q
⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov