CGDI CG100X adds Mercedes Benz 2019- HU6 (Head Unit 6) instrument cluster (with processor R7F701403 ) mileage correction function in the recent update.
Supports Mercedes A/B-class(W247) 2019-, CLA(W247) 2019-, GLB(W247) 2019-, GLE(W167) 2019-, E-class(W213) 2020- and CLS(W213) 2020- R7F701403 (encrypted) models.
Here obdii365.com will show how to correct MB HU6 cluster mileage with CG100X step by step.
Tools required:
CG100X programmer
CG100X Pro V2 adapter
CG100X D1 adapter
The function requires network connetion.
Record the original mileage before operation. Here it’s 564.1km.
First of all, remove the HU6 instrument module from vehicle. The HU6 module can be divided into 3 types:
A167, A213 and A247.
Check the HU6 cluster location here:
Mercedes HU6 Cluster Location and Steps to Remove for Mileage Correction
Remove and disassemble the HU6 module.
Check the front and back side of the module.
The mileage data is stored in the R7F701403(encrypted) processor.
Select Instrument function-Europe- Mercedes- GLE W167- 2019-R7F701403(encrypted) option and check wiring diagram.
Connect module with cg100x via Pro V2 mcu adapter. Remove 3 capacitors (220nf each) around the processor shown in the wiring diagram.
Also need to connect the D1 adapter (Do not extend the wire harness of the D1 adapter).
Don’t forget to connect DC 12V power supply.
Start operation.
Decrypt chip.
Decrypt chip ID.
Read Dflash and Pflash data.
Then save data.
CG100X has built-in algorithm for HU6 instrument. CG100X will calculate mileage online. It is the same as original mileage.
Input the mileage you desire to change (i.e 2,345km) and write mileage.
Mileage correction finished. Read mileage data again. It shows 2345km. Odometer correction was successful.
Restore the module back to original status. Don’t forget to resolder the 3 capacitors.
http://blog.obdii365.com/2025/04/02/mercedes-hu6-2019-r7f701403-mileage-correction-with-cg100x/
