2013 Volkswagen Tiguan electrical system problems

“Engine light on at around 50K - dealership said it was just an "issue with the warning lights" don't worry unless it blinks. At 74K I found out the turbo boost was the reason for this and I should have been told when the car was still under warranty. Realized in December of 2020 the car was soaking wet inside. Front and Back carpet was soaked like a sponge. Thought it was from driving in slush - turns out it's the moonroof drains. Repaired by VW dealership - all carpet and padding was ripped out and had to dry and then be reinstalled. Dealership ripped the interior moonroof headline while installing and didn't tell me. Huge fight with insurance - finally got fixed. Was told Cam cover leaking, and needed manifolds cleaned because of direct injection engine. Car has no power anymore. Car towed multiple times for jerking and flashing engine light. 2 engine coils replaced within 6 months. Even with moonroof drains cleaned yearly - car still gets wet inside and visible moisture on dashboard. Both back coil springs broke Aug 2026. Didn't realize until I saw the 2nd one laying in the driveway. $800 to repair those. Known recall issue with 2015 coil springs breaking by…”

“Feb 2026 My airbag light came on few days ago, now my horn doesn't work, and the functions on the steering wheel don't work, like being able to reset tire pressure and check functions for the car, the phone, the radio/cd information. Jan 2025 My seat belt (driver ) lock is broken ,to attach the seat belt in place..I have to just keep it clicked in, and put it over my shoulder (over a yr now) Also , as of Aug 2025, my car keeps having issues of stalling/ bucking, even though my mechanic has changed the points/plugs twice now. And the overheat light comes on ,off and on.. sometimes clears up once the car is shut off and then turned back on.. some times has to sit for a while, then clears up”

“Feb 2026 My airbag light came on few days ago, now my horn doesn't work, and the functions on the steering wheel don't work, like being able to reset tire pressure and check functions for the car, the phone, the radio/cd information.”

“My engine shut off my battery as I was driving. This forced my car to stop in the middle of the road. There wasn’t a battery sign or engine light on until after the event. This could’ve caused a wreck, especially if it would’ve happened on the highway. I also have a problem with my gas not registering. It doesn’t show how much gas I have left in my tank. I have had other electrical issues, and problems when starting my car.”

“The issue involves ongoing water intrusion through the panoramic sunroof, front power windows, and windshield seals. The vehicle is available for inspection upon request. This recurring leak has caused extensive interior water damage, including visible mold growth in the carpet on multiple occasions. This mold presents serious health risks to both me and my passengers, especially my sister, who is undergoing cancer treatment and has a severely compromised immune system. Water pooling beneath the carpet also threatens critical electrical systems located in the floor area, including the Vehicle Electrical System Control Module (J519), CAN/LIN bus wiring, door control harnesses, and footwell circuits. Corrosion or shorting in these systems could lead to unpredictable failures in safety-critical functions, even if not immediately apparent. Although Volkswagen dealerships have cleaned the sunroof drains as part of routine service packages, no formal diagnosis or confirmation of the leak’s source has been made. Independent mechanics have confirmed clogged drains and flushed debris to restore water flow. In 2019, I replaced the windshield at my mechanic’s…”

“Front sunroof drains have shrunk over time disconnecting from drainage port causing massive amounts of water to pool in floor boards. This location is where electrical connections for the airbags are located causing failure for airbags and more. Rear drains were also disconnected due to shrinkage and crimped causing water to pool in trunk. Mold has appeared causing health issues as well.”