VW Virtus Start-Stop Failure Leaves Drivers Stranded

Had similar battery issues on a VW Polo TSI 2017. The engine stalling and automatic restart problems turned out to be serious, linked to a failing battery and faulty voltage management system. The symptoms matched exactly, unusual engine shutdowns, warning lights, and idle stop system malfunction. The mechanic found the original battery had degraded significantly, no longer providing stable voltage for the start-stop system. The fix required: Complete battery diagnostic test, Replacement of main battery, Reprogramming of the battery management system, Reset of the start-stop system Worth noting this was not a simple error code clear job. When the voltage drops too low, the car deliberately disables the automatic restart function to protect the starter motor. Ignoring these symptoms risks leaving you stranded as the battery continues to degrade. Recommend getting a proper diagnosis focused on the battery system rather than just clearing codes. The starter motor itself is likely fine, but needs correct battery voltage to function properly.

Same symptoms hit my 2019 Virtus last winter with the engine stalling and start-stop failure. After the battery diagnostic, it turned out the original battery was struggling to maintain proper voltage. Had the battery replaced plus a full system reset done. The car has been running smoothly since, with no engine stalling or warning lights. Mind sharing what the repair bill came to in your case? My battery system fix was a bit pricey at 480€ total, but worth every cent for the peace of mind. Have you noticed any other electrical quirks since getting it sorted?

After taking it to a qualified mechanic last month, they diagnosed and fixed the automatic restart issues completely. The total repair bill came to 290€, which covered replacing the heavily discharged battery and resetting the entire start-stop system. The engine start function now works flawlessly, no more stalling or warning lights. The idle stop feature activates normally at traffic lights, and the hybrid vehicle-like fuel savings from the start-stop system are back to normal. The lower repair cost compared to yours was likely because they caught the battery degradation early, before it could affect other electrical components. All electrical systems have been running perfectly since the fix. The mechanic mentioned that catching these symptoms early helps prevent more expensive damage to the voltage management system. Good to hear your car is also running well after the repairs. These battery-related start-stop issues are fairly common as these systems age, but a proper fix usually solves the problem permanently.

Having dealt with this exact engine start problem, I finally got it properly diagnosed and fixed last week. The mechanic immediately suspected the battery system rather than just clearing codes like the previous shop did. The diagnostic test confirmed a failing battery was causing the automatic restart problems. They replaced the battery, reset the start-stop system, and recalibrated everything. Total cost came to 410€ including labor. Since the repair, no more unusual engine shutoffs or warning lights. The idle stop works perfectly at traffic lights again. Definitely worth paying for a proper fix rather than temporary error code clearing. Makes me wish I had skipped that first mechanic who just cleared the codes without addressing the actual battery issue. My advice to others, if your start-stop system starts acting up, get the battery system properly tested right away. Waiting too long risks bigger problems with the voltage management system.