In this post, you can learn about how to correct milegae on Mercedes-Benz HU7 IC177 M (2023+) and IC223 (2020+) using APPRO2 key programmer.
Main steps:
1.Run APPRO2 software, select Car Models-> Mercedes-Benz-> BENZ Mileage Tool-> HU7 (IC177 /IC223) (2023- ) Install HU7 Simulator [0093]
2. Click [Weld (R7F7015xx)] to check the guide and wiring diagram carefully
Guide:
- Install HU7 simulator to prevent instrument black screen
- Adjust mileage value in the IC223/IC177 M cluster block mileage synchronization with the EZS module
Wiring diagrams:
R7F701529 HU7
R7F701529 HU7 A
R7F701529 HU7 B
R7F701529 HU7 Simulator
Complete connection (need to connect another 12V power supply to the module)
3. Click [Pretreatment CPU (mode 1)] and click “Crack” to crack value 
4. Click [Read Config Data] to read and save the related IC data
5. Click [Calculate Service Data Online]
Load the config data file, input the new mileage, and click “Calculate”
Input the HU7 simulator serial number
It will calculate the mileage data
6. Click [Write Service data]
Load the new mileage file to write
Wait a while until the service data writing is completed.
7. Finally, turn off the power and exit the service
Done!
Note:
It will take long time to complete whole process by APPRO2, please be patient.