Regeneration 1) ● Comply with the relevant national and local traffic regulations. During vehicle operation, the particulate filter continuously captures carbon particles from the exhaust gas and undergoes intermittent combus- tion at high temperatures. If the engine operates under the following con- ditions for an extended period, the particulate filter will quickly accumulate carbon particles. It is recommended to avoid working under these situations continuously. These situations include: CAUTION In normal vehicle operation, the soot in the par- ticulate filter is burnt off at high temperatures on a periodic basis.
If it is not possible for the filter to clean itself, for example if the vehicle is only ever used for short trips, the filter will become saturated with soot. When the accumulation rea- ches a certain level, the particulate filter requires regeneration. ● Frequent short journeys ● Frequent cold starts of the engine at low temperatures. Noises, slight smells, and increased idle speeds may occur during regeneration. These are not in- dicative of any malfunction . Additionally, it is possible to observe the radiator fan continuing to run during driving or after the engine has been switched off.
The particulate filter requires regeneration When the yellow indicator lamp lights up, the engine will initiate active regeneration. It is rec- ommended to drive at medium to high speeds for a certain distance to facilitate the swift com- pletion of the regeneration process by the partic- ulate filter. Troubleshooting Please refer to and on page 147 and at the start of the chapter on page 150. Irregular engine running and faults Irregular engine running or faults when driving may be a sign of poor fuel quality: – Reduce your speed immediately. – Drive to the nearest correspondingly qualified workshop at medium engine speeds and low loads on the engine.
Volkswagen recommends using a Volkswagen dealership. The regeneration process is performed automati- cally by the engine, and the indicator lamp should switch off once regeneration is complete. – If these symptoms occur immediately after re- fuelling, switch off the engine immediately to avoid any subsequent damage. If the indicator lamp remains lit up or if indicator lamp appears (some vehicle models may ap- pear indicator lamp ), go to the nearest quali- fied workshop. Volkswagen recommends using a Volkswagen dealership. If not handled in time, the driving experience may be impacted. This could potentially cause damage to the particulate filter. – Seek expert assistance.
Emissions-relevant fault The indicator lamp lights up yellow. Fault in an emissions-relevant component that can damage the vehicle. – Go to a correspondingly qualified workshop and have the engine and exhaust system checked. Volkswagen recommends using a Volkswagen dealership. WARNING Unintended driving manoeuvres may put other road users at risk. – Test the engine and emissions-relevant com- ponent. Misfiring The indicator lamp flashes yellow. ● Always adjust your speed and driving style according to visibility, weather, road, and traffic conditions. 182.5C1.TRO.74 1) Regeneration:
The process of removing carbon particles from the particulate filter through technical means to restore its normal op- eration. Fuel and emission control 151