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thomaseis8

VW Taos Hood Safety System Malfunction Alert

My 2022 VW Taos shows an active hood fault and triggered spring actuators. The crash detection system seems to have malfunctioned as the airbag warning light is on and errors are stored in the computer. The pedestrian safety system with its impact sensors appears to be acting up, but I cannot find the root cause. Has anyone dealt with similar issues where the active hood system triggered without reason? Looking for workshop experiences and repair solutions before I take it in. Most interested in what parts needed replacement and how the car electronics were reset to resolve this.

4 comment(s)

JoKaSpeed

I had a similar issue with my 2020 VW Tiguan. Based on some experience working with modern car electronics, I can share what worked in my case. The hood latch system fault appeared together with airbag warnings, indicating a problem with the collision detection system. The workshop diagnosed a faulty acceleration sensor that was sending incorrect signals to the safety system, causing false triggers of the active hood mechanism. The repair involved: Full diagnostic scan, Replacement of the acceleration sensor, Recalibration of the impact sensor system, Reset of the safety system fault codes Total cost was 315€ for parts and labor. The repair took about 3 hours since they needed to verify all system functions after the sensor replacement. To better assist with your specific case, could you share: Have you noticed any unusual vibrations before this happened? Did the system fault appear suddenly or gradually? Are there any other warning lights active besides the airbag? Has the car been involved in any minor impacts recently? The symptoms sound very similar, but modern safety systems can be complex. Getting this checked professionally is important since faulty system sensors could compromise crash detection functionality.

thomaseis8 (Author)

Had my latest service at 110613km and they found the root cause. The acceleration sensor wiring harness had corroded contacts, triggering false signals to the car electronics. After cleaning and reseating the connections, they performed a full safety system reset. The hood latch and collision detection systems are now working perfectly. The car workshop also updated the control module firmware which apparently helps prevent similar issues. The repair was much simpler than expected, no parts needed replacement, just proper diagnostics and maintenance. Total repair time was under 2 hours.

JoKaSpeed

Thanks for sharing those details about your repair experience. The corrosion issue you encountered with the acceleration sensor wiring is actually quite common in the safety system of these VW models. On my Taos, I initially thought I needed a complete sensor replacement like many others, but it turned out to be a similar wiring connection problem. It makes sense that a thorough cleaning and proper reseating of the connections resolved the pedestrian safety system warnings. The fact that your car electronics only needed a firmware update and reset is definitely the best-case scenario, as sensor replacements can get expensive. This is valuable info for others who might encounter active hood fault warnings, always have the wiring connections checked first before assuming worst-case component failure. The collision detection system in these cars is quite sensitive to connection issues. One key takeaway from both our experiences is that when these safety system faults appear, proper diagnostics are essential rather than just replacing parts. Regular inspection of sensor connections during service could help prevent similar issues.

thomaseis8 (Author)

Glad I could update everyone on the final resolution of my Taos issues. Really relieved it turned out to be just corroded wiring causing the active hood fault. The crash detection system is working perfectly now after the wiring maintenance and control module update. Total cost was way less than the quoted sensor replacement, just standard labor rates for diagnostics and cleaning. For anyone searching with similar hood latch or safety system warnings, definitely get the wiring connections checked first. The car workshop found the issue quickly once they knew where to look. Makes sense why the collision detection kept giving false readings with those corroded contacts. Will make sure to request inspection of these connections during future services to prevent another occurrence. The car electronics are quite sensitive to connection issues, but at least the fix was straightforward once properly diagnosed. Much better outcome than having to replace expensive sensors or safety system components. Thanks everyone for the helpful suggestions that pointed me in the right direction for this repair.

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