Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤
Maintenance - Edition 10.2021
Applicable procedure for assessment of steel and CFRP fuel
tanks: ⇒ Gas engines - general information; Rep. gr. 20; Fuel
tanks; Damage assessment catalogue for natural gas fuel tanks
DANGER
Risk of explosion and danger to life due to escaping natural
gas. A hissing noise is a sign that there are leaks in the
natural gas system. Leaks in the natural gas system may lead
to an uncontrolled escape of natural gas.
Risk of explosion leading to loss of life or serious injuries.
– Do not perform any kind of work on the natural gas system
if leaking gas can be heard.
– If a gas leak can be heard, do not drive the vehicle into the
workshop.
– Park the vehicle outside and cordon off the area around it.
Testing for leaks
– Switch on ignition to set pressures in gas system to operat‐
ing state. For the leakage test, the engine can be switched
off.
– Using gas leak detecting system -VAS 523 003-, check the
indicated test locations -arrows- for leaks. It is absolutely
necessary to check all threaded connections of the gas sys‐
tem.
4. Descriptions of work
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English 
