VW Virtus Battery Sensor Issues Causing False Readings

Having some experience with electrical issues, I faced a similar problem on my 2021 VW Polo. The symptoms matched exactly what you describe, sluggish starts and dimming lights despite normal battery voltage readings. After vehicle diagnostics revealed inconsistent battery charge readings, my workshop identified a faulty battery sensor that was sending incorrect data to the car's computer. The sensor was misreporting the actual charge state, causing the charging system to malfunction. The repair process involved: 1. Complete electronic diagnosis 2. Battery testing to confirm voltage levels 3. Checking charging system performance 4. Replacing the defective battery sensor 5. Recalibrating the new sensor Total cost came to 315€ including parts and labor. Since the fix, all starting issues disappeared and electrical systems returned to normal. To provide more specific guidance, could you share: Current battery age and maintenance history, Any recent electrical modifications, Whether check engine or battery warning lights are active, Results of any professional diagnostics already performed This would help determine if your issue matches what I experienced and whether similar steps might resolve it.

Having some experience with electrical issues, I faced a similar problem on my 2021 VW Polo. The symptoms matched exactly what you describe, sluggish starts and dimming lights despite normal battery voltage readings. After vehicle diagnostics revealed inconsistent battery charge readings, my workshop identified a faulty battery sensor that was sending incorrect data to the car's computer. The sensor was misreporting the actual charge state, causing the charging system to malfunction. The repair process involved: 1. Complete electronic diagnosis 2. Battery testing to confirm voltage levels 3. Checking charging system performance 4. Replacing the defective battery sensor 5. Recalibrating the new sensor Total cost came to 315€ including parts and labor. Since the fix, all starting issues disappeared and electrical systems returned to normal. To provide more specific guidance, could you share: Current battery age and maintenance history, Any recent electrical modifications, Whether check engine or battery warning lights are active, Results of any professional diagnostics already performed This would help determine if your issue matches what I experienced and whether similar steps might resolve it.

Thanks for sharing the diagnostic details. After my last service at 80000km, I noticed similar inconsistencies in the voltage readings. The workshop ran vehicle diagnostics but couldn't pinpoint the exact issue with standard battery voltage tests. My battery maintenance record shows regular checks, and the battery is original from 2023. Interesting that your sensor needed replacement, this could explain why my charging system seems confused despite a relatively new battery. No warning lights on the dash, but the car battery symptoms match your description perfectly. Will schedule another diagnostic session focused specifically on the battery sensor calibration. Before investing in a sensor replacement, I want to verify if a simple recalibration could solve these battery charge issues.

Thanks for sharing the diagnostic details. After my last service at 80000km, I noticed similar inconsistencies in the voltage readings. The workshop ran vehicle diagnostics but couldn't pinpoint the exact issue with standard battery voltage tests. My battery maintenance record shows regular checks, and the battery is original from 2023. Interesting that your sensor needed replacement, this could explain why my charging system seems confused despite a relatively new battery. No warning lights on the dash, but the car battery symptoms match your description perfectly. Will schedule another diagnostic session focused specifically on the battery sensor calibration. Before investing in a sensor replacement, I want to verify if a simple recalibration could solve these battery charge issues.

Thanks for the additional details about your voltage readings and maintenance history. Your situation definitely mirrors my experience, especially the confusing diagnostic results despite having a relatively new car battery. In my case, recalibration alone did not resolve the charging system issues. The battery sensor continued sending incorrect data until replacement. The workshop explained that modern vehicle diagnostics often show these peculiar symptoms when the voltage sensor starts failing, normal readings on basic tests but erratic battery charging behavior. Some key observations from my repair experience: 1. Basic voltage tests remained inconclusive 2. Charging system worked intermittently 3. Low voltage symptoms persisted despite battery health 4. Sensor recalibration provided only temporary improvement Getting the sensor replaced was ultimately more cost-effective than multiple diagnostic attempts. However, a thorough check of the battery sensor calibration is still a smart first step. Ask the workshop to specifically monitor real-time sensor data while testing the charging system, this helped identify the root cause in my case.

Thanks for the additional details about your voltage readings and maintenance history. Your situation definitely mirrors my experience, especially the confusing diagnostic results despite having a relatively new car battery. In my case, recalibration alone did not resolve the charging system issues. The battery sensor continued sending incorrect data until replacement. The workshop explained that modern vehicle diagnostics often show these peculiar symptoms when the voltage sensor starts failing, normal readings on basic tests but erratic battery charging behavior. Some key observations from my repair experience: 1. Basic voltage tests remained inconclusive 2. Charging system worked intermittently 3. Low voltage symptoms persisted despite battery health 4. Sensor recalibration provided only temporary improvement Getting the sensor replaced was ultimately more cost-effective than multiple diagnostic attempts. However, a thorough check of the battery sensor calibration is still a smart first step. Ask the workshop to specifically monitor real-time sensor data while testing the charging system, this helped identify the root cause in my case.

Thanks for the detailed follow-up on the sensor calibration. The comprehensive battery testing approach you suggested makes sense. Your experience with recalibration attempts not fixing the charging system matches what my workshop suspected. After hearing about your voltage sensor replacement outcome, I will have them run a complete diagnostic scan focusing on the sensor data. Since my battery voltage readings show similar inconsistencies despite having a new battery, a faulty sensor seems increasingly likely as the root cause. Given the growing symptoms and your repair results, I will skip further basic tests and request detailed vehicle diagnostics specifically targeting the battery sensor system. At least now I know what to expect if sensor replacement becomes necessary. Will report back once I have more data from the comprehensive battery maintenance check. Having clear direction on the diagnostic steps saves time troubleshooting. Looks like thorough testing of the voltage sensor data is the key to resolving these battery charging irregularities.

Thanks for the detailed follow-up on the sensor calibration. The comprehensive battery testing approach you suggested makes sense. Your experience with recalibration attempts not fixing the charging system matches what my workshop suspected. After hearing about your voltage sensor replacement outcome, I will have them run a complete diagnostic scan focusing on the sensor data. Since my battery voltage readings show similar inconsistencies despite having a new battery, a faulty sensor seems increasingly likely as the root cause. Given the growing symptoms and your repair results, I will skip further basic tests and request detailed vehicle diagnostics specifically targeting the battery sensor system. At least now I know what to expect if sensor replacement becomes necessary. Will report back once I have more data from the comprehensive battery maintenance check. Having clear direction on the diagnostic steps saves time troubleshooting. Looks like thorough testing of the voltage sensor data is the key to resolving these battery charging irregularities.