PERFORMANCE / EST. 2026
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Maintenance

TDI after fuel-filter service: prime with VCDS

Prime supported diesel fuel systems after service using the correct conventional or UDS workflow.

GUIDE OVERVIEW

Difficulty
Introductory · 1/5
Time
1 min read
Vehicle / platform
Supported VW/Audi PD, PPD and common-rail TDI engine controllers; VE TDI excluded.
Tools
  • VCDS computer
  • Compatible Ross-Tech interface
Parts / supplies
  • None for this software task
STEP 01

Conventional controller

Select 01-Engine, Basic Settings, and group 035 if supported. Choose Go, then ON/OFF/Next. The pump should run for 30 seconds; this is normally enough after a filter change. Extensive injector or fuel-system work needs at least three cycles. Finish with Done, Go Back.

Sources 1

STEP 02

UDS controller

Do not enter conventional group numbers. Select the Transfer Fuel Pump test or documented equivalent and choose Go. Confirm Running, wait for Finished Correctly, then Stop.

Sources 1

Sources / references 1
  1. Ross-Tech VCDS manual ↗Reviewed Oct 8, 2026

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