Passat Battery Coding VCDS
Discussion
Trying to code my battery to my passat with vcds. But cant find the serial number. The old code is there but i dont know what info i need to change it to. Its a Bosch 096 AGM 70ah battery.
I have a screenshot of the old value.
This is whats been happening since i changed battery i think its the battery needing coding what u guys think.
https://youtu.be/TR7JQqARzzU
I have a screenshot of the old value.
This is whats been happening since i changed battery i think its the battery needing coding what u guys think.
https://youtu.be/TR7JQqARzzU
Edited by Gunner786 on Sunday 5th August 05:51
As this is an aftermarket battery, it won't have a code.
One of the coding is for the serial number, in which case, just make something up (add 1 to the number or something). When the ECU sees a brand new serial number, it will treat this as a new battery coding.
Ideally, you would find the OEM battery for your car with identical specifications to what you have installed, and enter the code from the sticker. Check on etka for the OEM part number for a 70 Ah AGM Passat battery. Google the part number, and examine the photos for a sticker.
If your battery is not an exact match, then you can use the code for as similar as possible a battery (e.g. if you have a 70 Ah AGM battery, then the code for a 72 Ah flooded battery could be used).
The problem comes if you replace a high end OEM battery with an inferior replacement, and leave the ECU with the coding for the upgraded battery. This is likely to lead to accelerated failure of the battery.
One of the coding is for the serial number, in which case, just make something up (add 1 to the number or something). When the ECU sees a brand new serial number, it will treat this as a new battery coding.
Ideally, you would find the OEM battery for your car with identical specifications to what you have installed, and enter the code from the sticker. Check on etka for the OEM part number for a 70 Ah AGM Passat battery. Google the part number, and examine the photos for a sticker.
If your battery is not an exact match, then you can use the code for as similar as possible a battery (e.g. if you have a 70 Ah AGM battery, then the code for a 72 Ah flooded battery could be used).
The problem comes if you replace a high end OEM battery with an inferior replacement, and leave the ECU with the coding for the upgraded battery. This is likely to lead to accelerated failure of the battery.
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