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I knew the 2011 VW Jetta TDI had ABS sensor based TPMS but I also had confirmation that the TPMS sensors on the Golf TDI and Sportwagen TDI are gradually being removed and replaced with the ABS based system. The ABS TPMS system isn't as accurate but because there are no sensors, it never needs sensor replacement. The sensors cost about $80/each and can last 5-8 years depending on use.
The ABS based system tire pressure value is set with a system reset button. When it detects that one wheel has a smaller rotating diameter, it assumes it's flat. The sensor based system directly measures the pressure and temperature and has a set air pressure value. It's possible to adjust it as shown in this writeup: Flashing TPMS sensor problem and TPMS replacement on VW Golf, Sportwagen, or Jetta.
This info has been added to the Golf buying guide and Sportwagen buying guides.
The ABS based system tire pressure value is set with a system reset button. When it detects that one wheel has a smaller rotating diameter, it assumes it's flat. The sensor based system directly measures the pressure and temperature and has a set air pressure value. It's possible to adjust it as shown in this writeup: Flashing TPMS sensor problem and TPMS replacement on VW Golf, Sportwagen, or Jetta.
This info has been added to the Golf buying guide and Sportwagen buying guides.