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
<-1 3->
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 function 06, "End Output".
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.