Hi Guys,
I want to share to you what i found and what was realy usefull for me.
I had to convert a MPH Cluster from an 07 RS4 to kmh, where as we all know the scale is different.
Found the solution on this site:
https://www.drive2.com/l/458060668373841277/If the site went offline, here is what its all about:
2) Solution 2e — order / buy a full-scale km from the European.
It remains to edit the eeprom so that the position of the arrow of the speedometer matches.
For reading, writing and editing we will use the program VAG_EEPROM_Programmer_V1.19g.
* EEPROM_V1.19g works fine under WinXP, Win7x32, Win7x64, on others it was not possible to check;
As an OBD adapter, K-line (for example KKL_409.1 or ELM327) is necessarily on the FTDI chip FT232xx.
* K-line adapter must be on 1m or 2m COM port, so that EEPROM_V1.19g sees it;
* You can change the COM port number of the K-line adapter in Device Manager;
* The speed of the COM-port is recommended standard — no more than 9600 bps;
* You can select the number of the working COM port in EEPROM_V1.19g in the tab "Options"
So, you are sitting in the car with a laptop.
* The laptop battery and the machine must be in good order and fully charged;
* extremely it is not recommended to power the laptop from the machine;
Turn the ignition on, do not start the engine.
Insert the K-line adapter into the OBD connector of the machine and into the usb laptop.
Open EEPROM_V1.19g, press
Dash-> Bosch-> Audi_A4 (RB4_Encrypted) -> Read_EEprom (Encrypted)
Reads about 10 seconds, reset the time, reset mileage from the last service — this is normal.
* can also blink the light in the car, flip the switch — this is also normal;
Save the eeprom dump in a safe place
File-> Save_As
This is a backup of the eeprom of the gadget in case something goes wrong.
… "
audi-club.ru/index.php?threads/a4-2003-g-v-schitok-priborov-oshibka-def.233279/page-2#post-7140748
Quote:
on the RB4 speedometer to addresses 0x320-0x32F. The first 4 words — speed * 100, the next 4 words — the position of the arrow. The checksum is not closed, change as you want.
At the addresses 0x394 (tachometer), 0x395 (speedometer), 0x396 (temperature), 0x397 (fuel), you can correct the zero position of the arrows (the entire scale shifts).
######################################
In 0x320-0x32f bytes there are calibrations of the speedometer;
America
BB00 7701 8467 8467 0000 8D01 7E40 7E40
Europe
BB00 7701 401F 8467 0000 8D01 081C 7E40
The values of [8467] in 0x324-0x325 and [7E40] in 0x32c-0x32d — corresponds to the offset of 100km / h to the left of the scale on the American double device;
The values of [401F] in 0x324-0x325 and [081C] in 0x32c-0x32d correspond to the 100km / h mark in the middle of the scale;
Change American values to Europe ([401F], [081C]) and get the classic 100km / h in the middle, corresponding to the scale of the European device;
re-calibrating the speedometer in eeprom
* We edit directly in EEPROM_V1.19g,
* Avoid using the numeric keypad (on the right), dial numbers from the main keypad;
* In some articles write that it is necessary to change only [401F] but in us without replacement [081C] the arrow runs off tightly to the right;
Write a dump into the device
Dash-> Bosch-> Audi_A4 (RB4_Encrypted) -> Write_Enprom (Encrypted)
* Take about 15 seconds, do not pull the cable, sit still and do not blink)
* If DEF appeared on the run site and / or Error — you edited something wrong, restore the device using a backup copy of the eeprom dump.
You can save the corrected dump (just in case) and exit the program.
Then it remains to check the result of the scale recalibration.
To do this, you need to run WASH-Diagnost1.1 (the adapter is same), go to the Device Combination (17), run the Executors Test (03).
The arrow of the speedometer should be frozen at 100 km / h — in the middle of the scale.
