Since Jan. 2025, APPRO2 has supported the Mercedes-Benz 2018-2023 HU6 instrument cluster (with processor R7F701403) odometer correction.
Here is an example.
Run APPRO2 software.
Go to Mercedes Benz function- Benz Mileage Tool- HU6 (IC177) 2018-2023 without CAN Filter.
Check wiring diagram.
Remove and disassemble HU6 cluster.
Locate processor CPU R7F701403.
Solder RH850 adapter wires to the cluster according to the wiring diagram and connect RH850 adapter with AP-PRO2 main unit.
Follow steps below to correct mileage. The APP2 will calculate mileage data online. Make sure you have stable network connection.
1.Read/Crack CPU info.
2. Preprocess CPU
3. Read Config data
4. Calculate service data online (decrypt Config data)
5. Write service data.
6. Turn off ignition and exit service mode.
Then follow prompts until finish.
