I知 getting a warning message for all my turn signals, my fog lights, my license plate light, and my third brake light.

Everything works except one brake light, two turn signals, and one headlight.

Fuses are good, wondering if it could be a relay switch issue and where i can find info on what each relay is for. 2017 VW Passat 1.8T SE w/Technology

 

From what you’re describing on your 2017 Passat, it doesn’t really sound like a relay issue. When multiple exterior lights across different systems start throwing warnings at the same time, it’s usually a grounding problem, BCM (body control module) issue, or a voltage drop somewhere in the lighting circuit.

VW systems are very sensitive, so even a slightly bad ground in the rear cluster or trunk area can trigger warnings for turn signals, plate light, and brake lights together. Since you already have some lights still working, I’d strongly suspect a shared ground point or wiring harness issue rather than individual bulbs or fuses.

Relays for lighting are usually integrated and not the main cause here. If you want diagrams, look up the fuse/relay layout for the Passat B8 BCM module under the driver side dash and the rear https://instantcasino-fr.app/ grounding points first.