Fuel gauge, adaptation
WARNING: This page is about a different variant/trim than selected.
Special tools, testers, and auxiliary items required
- Fuel extraction unit VAG 1433 A (or equivalent, approved fuel cart)
- Switch off ignition.
- Drain fuel tank completely using fuel extraction unit, then fill with 7 liters (1.85 gallons) of fuel.
WARNING:
- Fire hazard. DO NOT smoke or work near heaters or have anything in the area that can ignite fuel.
- Always drain fuel from fuel tank using an approved fuel cart.
- Wear fuel-resistant gloves whenever working with open parts of the fuel system.
- Connect scan tool VAG 1551, select operating mode 1 "Rapid data transfer", switch on ignition and enter address word 17 "instrument cluster".
- Press -Q- button to confirm input.
- Press → button until "Select function" appears in display.
Indicated on display:
| Rapid data transfer HELP Select function XX |
- Press buttons -1- and -0- to select "Adaptation" function 10.
Indicated on display:
| Rapid data transfer Q 10 - Adaptation |
- Press -Q- button to confirm input.
Indicated on display:
| Adaptation Enter channel number XX |
- Press buttons -3- and -0- to select adaptation "channel 30".
- Press -Q- button to confirm input.
Indicated on display:
| Channel 30 Adaptation 128 → < - 1 3- > |
NOTE:
- At least 60 seconds must pass between adding fuel and reading fuel gauge.
- Before this time passes, the fuel gauge reading is unreliable due to the movement of the added fuel.
- Using button -1-, the adaptation value can be decreased as low as 120, using button -3-, the value can be increased as high as 136, e.g. 130.
- Indicated on display:
The fuel gauge is adapted correctly when the needle rests on the center red demarcation (reserve)!
When indication is OK:
- Press -Q- button to confirm input.
- Indicated on display:
- Press -Q- button to confirm input.
- Indicated on display:
- End adaptation of fuel gauge with → button.
Indicated on display:
| Rapid data transfer Help Enter address word XX |
NOTE:
Replace fuel gauge sender only if fuel gauge cannot be matched correctly.
- Press buttons -0- and -6- to select "End Output" function 06.
Indicated on display:
| Rapid data transfer Q 06 End Output |
- Press -Q- button to confirm input.
Indicated on display:
| Rapid data transfer Help Enter address word XX |
The tester is now in basic function again.