2019 Volkswagen Tiguan: sudden loss of power

Filed Aug 14, 2026 · Acceleration · GA

I am reporting a safety-related electrical defect on my 2019 Tiguan that has been intermittently occurring since March 2026. This typically has happened during the hotter parts of the day when the tempreature in in the 90's. While driving, I get two different warnings that displays; "Check starter system" followed by "ignition-system-shut down". Within a few minutes, the engine continues running but the instrument cluster, HVAC and turn signals lose power. Other electrical systems also shut down like, the radio, navigation, head lamps, and side view mirror adjustment. This creates a serious safety hazard because I lose turn-signal and vehicle-information functions while the vehicle is moving." I have found multiple complaints involving 2019 Tiguans with this exact failure mode, including complaints specifically connecting it to Volkswagen recall 28H7 / the federal safety agency 23V‑604 involving the ignition switch and polyfuse. Volkwagen has not aknowledge, reproduced, nor confirmed this issue. I belive that ithe issue is related to the same problem as Volkswagen's 28H7 / the federal safety agency 23V‑604 ignition-switch recall, which currently applies to certain Jettas. That complaint describes the same combination of engine continuing to run while A/C, instrument cluster, headlights and turn signals lose power. I believe that 28H7 should be expanded to the 2019 Tiguan.

Filed Mar 10, 2026 · Driver assistance, Electrical · NC

Relates to the Volkswagen Recall: 28H7-Ignition Switch that for some reason is only applied to Jetta's but needs to be expanded to include 2019 Tiguans . In vehicles equipped with a conventional ignition switch, the polyfuse can fail, particularly when the vehicle is operated in high temperature environments. If the polyfuse fails, it can result in the engine stalling while driving and failure of the vehicle's electrical system, increasing the risk of a crash. I have had this issue happen over 5 times since the initial incident last week. Now anything above 70 degrees Fahrenheit causes the interior to "lose power" but the engine will continue to run. The A/C, infotainment system, all the ADAS, instrument cluster, headlights, and turn signals shuts off completely. No brake lights, no blinkers, no odometer reading, nothing. I can still drive (accelerate & brake) when this is happening but without all of those systems working I cannot safely operate this vehicle.

Filed Sep 23, 2025 · Electrical · NJ

My 2019 Volkswagen Tiguan suddenly shut off on the highway with my children in the car. The vehicle lost all power, including steering, air conditioning, radio, navigation, and windows. I was barely able to coast to safety. The dealership diagnosed the issue as the ignition switch, part number 5Q1 905 865. This is the exact same part number included in Volkswagen’s current recall of nearly 50,000 Jettas for ignition switch failure. Despite this, VW has not expanded the recall to cover Tiguans. I paid over $700 for the repair, even though the part itself costs around $50. Worse, the dealership reinstalled the same recalled part number into my Tiguan, meaning the defect has not been corrected and could occur again at any time. This is a serious safety hazard. A sudden engine shutdown at highway speeds could easily result in injury or death. Volkswagen is fully aware of this defect but is refusing to extend the recall to affected Tiguan vehicles. I am requesting that the federal safety agency investigate this issue immediately and require Volkswagen to expand the ignition switch recall to include Tiguans equipped with part number 5Q1 905 865.

Filed May 30, 2025 · Fuel system · CA

Was driving on the freeway in my 2019 VW Tiguan when I experienced a sudden unexpected loss of power. Warning lights came on and the car went into a "limp mode" not allowing the engine to rev past a certain RPM. I took the car to be serviced at a local dealership where it was determined that the Fuel Injector Harness was faulty and needed to be replaced. When I informed the dealer that there was an extended warranty on the harness (2018-2019 model years within 10 years/120 miles) and the part should be covered, the dealer and later VW of America said that my vehicle was not part of the warranty. VW of America could not explain to my as why my car was not part of this warranty, but it is obviously a known problem on their end and they should honor what they advertised with their warranty extension with the federal safety agency. [XXX] I find VW of America's response to this problem completely unacceptable and quite dangerous. Their unwillingness to take care of this critical component with a known failure rate unnecessarily costs consumers for repairs that VW should be honoring according to their own posted Warranty Extensions and could potentially cost bodily damage and lives. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 29, 2025 · Fuel system · TX

Hit a small patch of black ice, not sure what happened but it caused the turbo to fully quite working creating a loss of power Engine Valve seals also were damaged Possible over boost

Filed Jun 11, 2024 · Electrical · NM

VW has only issued an ignition failure recall for 2019 - 2021 Jetta's. I just purchased a 2019 VW Tiguan and because the recall does not extend to this model the repair to replace the ignition switch due to a failure that is identical to the Jetta is being refused. It is absolutely a safety risk and needs to be extended to include other car models of the same year. I was on my way to a mechanic when I lost all power to the car, the dash lights went out, and the check starter system error message popped up. It was 89 degrees here with overcast and was actually a lower temperature day when two days prior it was 100. CarMax specifically is only willing to replace the starter/alternator because there is no recall notice for the Tiguan. I am trying to get them to fully repair the car to a safer standard, but there is no guarantee without an actual recall for this model.

Filed Aug 23, 2021 · Electrical · TX

We bought a new 2019 tiguan for my 16 year old daughter. At just over 5 thousand miles, she was driving the car home from school when all the electric power was lost. The engine kept running, but she lost all the lights, headlights, break lights, radio, ac, speedometer, etc. Basically everything stopped working except the engine. Obviously this was a safety concern for me because she's 16 and didn't have headlight, or break lights, or a speedometer, just to name a few. Volkswagen dealership in mckinney, TX, began diagnosing the issue. They changed the battery and said the car was fixed. Unfortunately, as my now 17 year old daughter was driving, the car all the sudden lost all power again. The danger is that the car starts and performs perfectly at first, but will shutdown everything but the engine while she's driving! So this is the 2nd time this has happened. The car went back to the dealership and they a "software update", and claimed that corrected the problem eventhough I suspect they dint truly believe they fixed it. So my daughter starts her car and drives down the road with no problems, until, for the individual time, she loses power while driving over 50 mph. So the car is at the dealership for a 3rd time. The car has just over 5 thousand miles on it. Volkswagen keeps claiming they've corrected the problem, and keeps returning an unsafe vehicle to my daughter.