Volkswagen Touran Service Manual: Heated Oxygen Sensor, Replacing

Protecting

  Caution Missing protection leads to the electrical system damage.   Note ...

4-Pin Heated Oxygen Sensor (HO2S), Removing and Installing

  Note Do not repair the heated oxygen sensor wires. Repairing may result in malfunctions. Use the faulty sensor as a guide ...

Other materials:

Volkswagen Touran Service Manual. Safety Precautions
  Caution Risk of damaging the battery cells at too high of drying temperatures! Observe the maximum drying time of 30 minutes at a drying temperature of +80 C (176 F). ...

Volkswagen Touran Service Manual. Run-Flat System PAX, Examining Support Ring
As with the tire, the supporting ring is generally not replaced after driving with flat tire.     Replace the support ring if the following damages have occurred: Blowouts or mis ...