17 - Instruments
- Adaptations
- (1)-Offset for tank calibration values-Offset sensor 1
- (2)-Offset for tank calibration values-Offset sensor 2
- (3)-Offset for tank calibration values-Offset sensor 3
- (4)-Offset for tank calibration values-Offset sensor 4
- (5)-Offset for tank calibration values-Complete tank calibration
- Range is -12.8 to +8 with -12.8l being the factory default.
- <0 moves the needle down.
- =0 no change/movement
- >0 move needle up.
- +1 = needle moves up by ~1/16 up
- +2 = needle moves up by ~⅛ up
so I just finished testing this feature. I am now able to adjust the estimated left over fuel and the led fuel gauge. i know now what i need to do as to set it closer to what i should be showing.
the goal here for some who don't know, is to have the estimator and fuel gauge show closer to empty. as we all know when the fuel gauge shows empty we are able to drive a bit more, how much more i don't know for sure as i have not tested it but i will soon.
the way i plan on calibrating this is to run the tank empty and set the gauge to show no led bars or all blanked out led bars of fuel. plus it will also show in the fuel estimator "0 miles".
the technique which i have done on another car is to have at least two tanks of gasoline jugs in the garage when this procedure is done.
1. just drive the car like normal till your absolutely sure its as low as it can be by the time you drive home. make sure you not out and stuck somewhere.
2. just let the car idle till its empty and stalls out.
3. go into vcds and adjust the gauges with the instructions above.
*continue at the bottom.
instructions for vcds (look above):
i used code 20103
audi S3 sedan 2015
i don't know what (3) & (4) does. i couldn't get any numbers to go into it to test it.
the main one you want to use is (2) sensor 2. this lets you adjust up and down by 50 miles. *increments of 5 miles.
sensor (1) & (4) seems to fine tune the increments but still at 5 miles.
you need to be on the gauge selection with how many miles you have left in the tank to do this adjustment. the adjustment is realtime and will change as you hit "do it".
what RANGE numbers are possible:
"-12.8" = free floating stock setting. middle but lets the other sensors adjust the final number.
"0" = same as "-12.8" but locks it in the middle. so i assume this locks the sender in the fuel tank to a specific voltage and just reads it as the middle number. think of this as the middle number at all times no matter the fuel level. its the middle number for the high and low range you can adjust and not the middle of whats left in the tank.
while in sensor 2:
max = 8.0
min = -8.0
middle= 0
stock = -12.8
each +/- 1.0 change will roughly give you +/- 5miles to your estimation. the fuel gauge led will change automatically as you change the miles left over.
while in sensor 1:
max = 0
min = -8.0
stock = -12.8
if you put in anything between 0 - 8 nothing will change.
in the sensor it allows you to drop it but not increase the miles left over.
each +/- 1.0 change will roughly give you +/- 5miles to your estimation. the fuel gauge led will change automatically as you change the miles left over.
while in sensor 5:
this seems to be a more finite adjuster.
it doesn't move the miles much but i noticed if you max out sensor 2: 8.0 and need another 5 miles added then max this sensor out at 8.0.
max = 8.0
min = -8.0
middle= 0
stock = -12.8
*increments can be adjusted as low as +/-0.1 but this would take forever. i would only use 0.5 when doing the final adjustment.
4. once the car has stalled out in a safe location like a parking stall, then adjust the miles till you see it showing 5 miles. when you see this use one less complete digit so that it shows "0" miles. the idea behind the full 1.0 digit change is to make sure that if there are inclines or other discrepancies it will still give you a short warning rather than still showing 5 miles. as 5 miles is the lowest amount it does show before going to 0.
