VW Transporter No-Start Despite Working Starter Motor

A weak battery connection can definitely cause those symptoms. Had similar starting issues with my VW Passat 2007 1.8 TSI where the engine would crank but not fire up. Initially suspected engine software problems due to a previous ECU failure. The fix turned out much simpler, corroded and loose battery terminals were preventing proper current flow to the starter. The corrosion creates resistance, making the starter appear to work while not delivering enough power for ignition. Key checks before visiting a mechanic: Clean both battery terminals with a wire brush, Ensure terminals are tight and properly secured, Look for green/white corrosion buildup, Check battery voltage with a multimeter if possible In my case, thorough terminal cleaning and properly tightening the connections resolved the issue. Consider this basic check before suspecting more complex engine diagnostics. The engine light may not always illuminate for connection problems, making them easy to overlook. The repair was straightforward and required no specialized tools or complex labor. Unlike your previous ECU repair, battery connection issues rarely indicate serious underlying problems if caught early.

Thanks for sharing those battery terminal tips. That intermittent starting issue with my Transporter really had me worried about another expensive ECU failure. After cleaning the connections, the engine surge I was experiencing completely stopped. Mind sharing what the battery terminal fix ended up costing you? Also curious if youve had any other starting problems since then? My check engine light has stayed off but want to make sure Im not missing any early warning signs for potential engine software issues.

After getting it checked by a mechanic, the battery terminal issue was resolved for 155€ including labor. The loose connections were causing the engine surge and starting problems, but since fixing them, the engine control system has worked flawlessly. No check engine light or ECU-related problems have occurred in the months since. The mechanic did a thorough job cleaning both terminals, replacing corroded connectors, and ensuring proper contact. While the cost might seem high for what appears simple, having a professional verify there were no underlying engine diagnostics issues was worth it for peace of mind. Good to hear cleaning the connections helped with your Transporter. Just keep an eye on those terminals during regular maintenance, catching corrosion early prevents more serious electrical system problems that could trigger false ECU failure warnings.

Let me share what happened when I took it in. Turned out my suspicions about avoiding another ECU failure were right, but the fix was way simpler than expected. The mechanic only charged 60€ to properly clean and secure the battery terminals. Pretty relieved since I was bracing for another 800€ bill. The fuel injection system and starter are working perfectly now. No more check engine lights or starting issues in the past few weeks. Looking back, that questionable ECU repair from last month might not have been necessary at all. Sometimes the simplest fix really is the right one. Just going to stay on top of checking those terminals regularly during oil changes. The engine software seems stable now, and I definitely learned my lesson about getting a second opinion before agreeing to expensive diagnostic repairs.