Replacing the battery in your 2018 Volkswagen Tiguan? This guide provides a comprehensive walkthrough, including part numbers, battery adaptation with VCDS, and troubleshooting common errors.
This guide details my experience replacing the battery in a 2018 Volkswagen Tiguan SE 4Motion. The original battery exhibited signs of failure: hesitant starts, clicking sounds from the dashboard, and eventually, a complete inability to start. Jump-starting worked temporarily, but the alternator couldn’t recharge the battery, indicating a failing battery with a measured voltage of 12.2 volts.
Choosing the Right 2018 Volkswagen Tiguan Battery
Here are the relevant part numbers for compatible batteries:
- Original OEM Battery: Part Number 6R0 915 105 B, 69 Ah Capacity, EFB Technology
- New OEM Battery: Part Number 000 915 105 CC DSP, 68 Ah Capacity, AGM Technology
- Interstate Replacement (Costco): Item Number 1355770, AGM Technology, 70 Ah Capacity, Group Size H6 (48)
While the original battery used EFB technology, the dealership confirmed that the current OEM replacement uses AGM technology. I opted for the Interstate AGM battery from Costco (Item 1355770) which was an exact fit, including compatibility with the battery heat shield and original bracket. The dealership quoted $254 for their AGM battery, while the Costco option cost $180.
Battery Adaptation with VCDS
After installing the new battery, a battery adaptation is crucial. This process informs the vehicle’s system about the new battery’s specifications. I used a HEX-CAN VCDS, but OBD11 can also be used.
Using VCDS, access the CAN Gateway (19) through Open Controller, then go to Adaptation (10). Modify the following channels:
- IDE03256-MAS06105-Battery adaptation-Rated battery capacity: Update this value to match the new battery’s capacity (70 Ah in my case).
- IDE03256-MAS06106-Battery adaptation-Battery technology: Select the appropriate technology (FLEECE for AGM batteries). There are extensive discussions online regarding the “FLEECE” option for AGM batteries if you require further information.
- IDE03256-MAS06108-Battery adaptation-Battery Serial Number: While the serial number seems to consist of a series of 1s, I changed the last digit to “2” to indicate a new battery. The actual serial number doesn’t appear to be critical for the system to recognize the new battery.
Important: Before making any changes, use VCDS to create a log. This allows you to revert to the original settings if necessary. Perform the adaptation with the ignition on but the engine off (press the start button without pressing the brake pedal).
Troubleshooting Post-Installation Errors
After starting the car, I encountered errors related to start/stop, ESC, front assist, TPMS, and another unspecified system. These errors cleared automatically after driving for about 5 minutes, except for the auto start/stop error. This final error resolved itself after stopping and restarting the car following a 10-minute drive.
Due to the premature battery failure (less than 4.5 years), I plan to disable the auto start/stop function using VCDS. Instructions for this procedure can be found online.
This detailed guide, based on personal experience, aims to assist other 2018 Volkswagen Tiguan owners with their battery replacement process. By performing this task yourself, using tools like VCDS, you can save on dealership labor costs. Remember to consult your owner’s manual and other resources for specific instructions and safety precautions.
