Volkswagen Polo Service & Repair 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:

Checking with Expansion Valve, Receiver/Dryer and A/C Compressor Regulator Valve -N280-, Externally Regulated A/C Compressor
Specified Values   Note Connecting service station. Refer to → Chapter „Connecting Service Station“. Observe test requirements. Refer to → Chapter „P ...

Replacing the battery
Fig. 21 Vehicle key: opening the battery case cover Fig. 22 Vehicle key: removing the battery First read and observe the introductory information and safety warnings Volkswagen recommends having the battery changed at a Volkswagen dealership or by a qualified workshop. The battery is l ...

Checklist
Carry out the steps in the specified order : With the engine at operating temperature, park the vehicle on a level surface to ensure that the engine oil reading is correct. Switch off the engine and wait a few minutes for the engine oil to flow back into the sump. Open the ...