Fuel Gauge: Service and Repair

Adaptation (function 10)

Use this function to initiate and store the following changes:
- Adaptation of odometer reading when replacing/exchanging instrument cluster.
- Adaptation of fuel gauge reading.
- Adaptation of Multi-function Indicator (MFA) fuel consumption indicator (where applicable).

Individual functions are called up using the appropriate channel number from adaptation table.

Adaptation table:







Fuel Gauge, Adaptation

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:


Channel 30 Adaptation 130 Q
<-13->







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:


Channel 30 Adaptation 130 Q
Save modified value?


- Press -Q- button to confirm input.

- Indicated on display:


Channel 30 Adaptation 130 ->
Modified value is saved


- 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.