Question 1

DPF blockage from short journeys (2.0 TDI)

Accepted Answer

The diesel particulate filter on the 2.0 TDI needs regular sustained runs at motorway speeds to regenerate. Cars used mainly for short urban trips light up the DPF warning, lose power and may go into limp mode; repeated interrupted regenerations also dilute the engine oil with diesel.

Question 2

Haldex four-wheel-drive coupling failure (Tiguan 5N)

Accepted Answer

The Haldex coupling that sends power to the rear wheels relies on a small electric pump and clean fluid. When the pump fails or the filter clogs, the car becomes front-wheel drive only, with a 4x4 warning or no warning at all. Regular fluid changes are often skipped.

Question 3

Side effects of the EA189 emissions fix (2.0 TDI)

Accepted Answer

Engines caught up in the EA189 'dieselgate' scandal received a software update (and a flow transformer on the 1.6 TDI). Some owners report poorer economy, rough running, more frequent DPF regenerations and EGR or injector faults after the fix.

Volkswagen TiguanTiguan 5N

Known issues and common problems

Volkswagen TiguanTiguan 5N

Known issues and common problems

DPF blockage from short journeys (2.0 TDI)1 solutionsMedium

Haldex four-wheel-drive coupling failure (Tiguan 5N)at 120000 km · 1 solutionsMedium

Side effects of the EA189 emissions fix (2.0 TDI)1 solutionsMedium