5/20/2024

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction

Tutorial: how to correct VAG MQB RH850 R7F701407 (5A Cluster) odometer using CGDI CG100X programmer.

 

It’s a VW Tiguan L 2019. 5C cluster. Cluster number: 5NG 920 650C.

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 1

First of all, record original mileage. CG100X will show you a wiring diagram (12V (ON) instrument startup diagram) to activate (power on) instrument cluster.

 

Take a photo of the instrument and the original mileage before disassembling it.

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 2

Original mileage: 5000 km

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 3

Disassemble cluster carefully

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 4

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 5

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 6

Run CG100X software

Select Europe->VAG MQB->R7F7014xx (Remove Capacitor method)-> R7F701407 (Only 5A cluster)

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 7

Verify it is 5A cluster. 5A cluster starts with ‘EM’ on the silkscreen. 5C (starts with ‘PCJ’) is not supported at present. 

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 8

Check wiring diagram

You will need a CG100X D1 adapter

The D1 adapter is for D70F34xx D70F35xx R7F7014xx RH850 Mileage Repair without Soldering, No Lift Pin.

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 9

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 10

Connect CG100X, D1 adapter and cluster following the wiring diagram

Don’t forget to give 12V power supply to the device

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 11

Start operation

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 12

Chip is encrypted. Decrypting chip. Don’t disconnect device during calculation.

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 13

Must save original mileage data. It is very important.

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 14

Calculate mileage successfully. CG100X has built-in algorithms. Online calculation requires network connection to access CG server.

 

Check current mileage. Check if the mileage value is correct or has no big difference.

If the mileage is incorrect or has big difference, quit the operation and contact CGDI engineer as soon as possible.

If mileage is correct, enter mileage you desired, i.e 65,454 km

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 15

Writing mileage

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 16

Mileage correction successfully.

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 17

Install instrument cluster.

Check the new mileage

CG100X VW Tiguan MQB RH850 R7F701407 Mileage Correction 18

It is fine.

 

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