Q7 Random Shutoffs & Starting Issues Need Expert Fix

As a Q5 2019 owner, I encountered nearly identical starting issues last summer. The symptoms match exactly what you describe, unusual engine shutoffs and problematic ignition key response. While the initial suspicion was the ignition switch, it turned out to be a failed fuse box connection affecting the car ignition system. The problem required replacing the main fuse box and rewiring several ignition-related connections. It was a serious electrical issue that could have led to complete engine failure if left unaddressed. The starting issues progressively worsened over two weeks before repair. The key signs that pointed to a fuse box problem rather than an ignition switch: Engine would start intermittently when turning the key, Dashboard lights flickered during starting attempts, Complete electrical shutdown occurred occasionally Worth noting that these symptoms can also indicate a failing ignition switch, but given your mileage and model year, checking the fuse box connections should be the first step. Both issues require professional diagnosis with specialized equipment to properly identify the root cause. If your current symptoms continue, avoid multiple engine start attempts as this could strain other electrical components.

Thanks for sharing your fuse box experience. That insight helped me fix a similar issue with my Audi Q7 recently. The car ignition problems matched your description exactly, especially the dashboard flickering when trying to turn the key. My mechanic also found additional ignition coil damage that needed replacing during the repair. Has anyone else reported this issue during your discussions? Would be really helpful to know if the fix has been reliable for you and what the total repair cost came to. The engine start is smooth now, but Im considering preventive replacement of related parts to avoid future issues.

Had to update on the repair outcome since you asked. Like your case, my starter motor issues were resolved after the mechanic fixed the faulty fuse box, total cost was 52 Euro for the defective fuse replacement. The ignition switch problem disappeared completely after the repair. Running strong for several months now with zero engine start problems. The car electronics are functioning perfectly, and no more dashboard flickering when using the key. Never experienced any ignition coil damage like you mentioned, so that might be specific to your vehicle or driving conditions. The initial diagnosis pointing to a fuse box issue proved correct, and the repair has been completely reliable. Based on my experience, preventive replacement of other components might not be necessary if your current fix resolved all symptoms. Keep monitoring how the car performs, but if the engine starts normally now, the core issue was likely addressed with your recent repair.

I took my Q7 to a new mechanic last week after all the helpful feedback here. The starter motor and fuse box diagnosis was spot on. They found corroded fuse box connections affecting the car ignition system, plus the damaged ignition coils mentioned earlier. Total repair cost came to 450 Euro including parts and labor. The dashboard lights are now stable, and the car starts perfectly every time I turn the ignition key. Really glad I got this fixed before it caused more serious electrical damage. The mechanic did a thorough check of all car electronics while making the repairs. They suggested annual electrical system inspections given the complexity of these vehicles, which seems like good preventive advice. Much better experience than my first mechanic visit. Thanks to everyone who helped point me in the right direction with the diagnosis. The car runs great now, and I feel much more confident about the electrical system reliability.