VW Lupo Hood Latch Triggers Multiple Safety Warnings

Had almost the same issue with my 2004 VW Polo diesel last year. As someone with some experience working on VWs, I initially thought it was just the hood latch, but it turned out to be more complex. The root cause was a faulty impact sensor affecting both the crash detection system and hood electronics. These systems are interconnected for safety reasons, which explains why you're seeing multiple warnings. The airbag warning light is triggered because the collision detection system shares components with the airbag control unit. My workshop found that the acceleration sensor had failed, causing false triggers in the active hood system. They replaced the sensor and reset the car electronics. Total repair cost was 315€ and took about 3 hours to complete. Before suggesting specific fixes, could you share: Has the hood system been triggered before? Are there any signs of previous accident damage? Does the hood open and close normally? Have you scanned for specific error codes? This could definitely be a similar sensor issue, but knowing these details would help narrow down the exact problem. The VW Lupo shares many electronic components with other VW models from that era, so the fix might be similar to what worked for my Polo.

Just had the entire crash detection system inspected at my 27200km service last month. The impact sensor in my Lupo was showing similar symptoms before replacement. The car safety system went haywire after moisture got into the wiring harness connecting the hood latch to the main control unit. The collision detection module was getting false readings, which explain those warning lights. The repair shop found corrosion on the sensor pins and damaged wiring insulation. Total fix came to 280€ including parts and labor. All warning lights cleared after they installed the new components and performed a system reset. One tip: make sure they check all wiring connections to the hood latch, not just replace the obvious parts. My car sensor issues came back the first time because they missed some corroded wires further down the harness.

Thanks for that detailed feedback on your repair experience. The wiring harness corrosion issue you mentioned matches exactly what happened with my Polo, these VW models seem prone to moisture damage in the hood latch area. The pedestrian safety system in these cars is quite sensitive, and even minor wiring issues can trigger multiple warnings. When my crash detection system acted up, the shop also found corroded connections beyond just the main sensor area. They had to trace the entire harness to fix all compromised spots. Something worth noting about these active hood systems, the control module often stores fault codes even after the physical repairs are done. In my case, they had to perform two separate resets to fully clear the car electronics memory. The first reset didnt take because some residual corrosion was still affecting the signals. Since your repair went well, I might get mine checked again during the next service. The safety system warnings occasionally flicker on my dash, which could indicate similar wiring deterioration starting up again.

Thanks for sharing those important details about the full sensor harness check. Definitely saving me from a potential repeat repair. Really helpful to know about the double reset too. My hood latch and airbag warnings have stayed clear since the full wiring replacement. The car electronics seem much more stable now that they addressed all the corrosion spots along the safety system connections. The collision detection is working properly again according to the diagnostic scan. Just so others know, the total repair time was around 4 hours. The shop had to carefully trace and inspect all the pedestrian safety components and wiring. While 280€ seemed steep at first, it was worth it to get the complete fix rather than just replacing obvious parts. Only recommendation I would add is getting a full diagnostic scan before repairs. The fault codes helped identify exactly where moisture had compromised the crash detection wiring. This saved time in locating all the corroded sections that needed replacement.