Tuesday, 14 November 2023

BMW CAS4/ CAS4+ Mileage Correction with Yanhua ACDP1/ ACDP2

 Yanhua Mini ACDP2/ACDP1 can change mileage on BMW CAS4/CAS4+ perfectly. Check the step-by-step guide below to operate.

Step 1: Reset CAS4 Mileage via OBD

Remove the cluster from the vehicle

Follow the ACDP OBD connection to connect ACDP device and vehicle OBD port

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

Open Mini ACDP APP

Confirm the ACDP device is connected

1.Select BMW>> CAS1~4 >> CAS4/CAS4+>> OBD mode>> IMMO/Mileage>> Reset mileage

Use the ACDP standard power adapter (voltage+ 12V, current>=2.5A)

Device is being reconnected

Confirm ACDP is connected to vehicle OBD port

Read out the original mileage and vehicle info read out

Make a screenshot to save it

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

Pay attention to the on-screen note

If the ECU does not pre-process, preprogram it first.

Backup coding file…

Backup file succeeded. Pay attention to the path to save the file

Pre-process ECU system finished

Reset mileage finished

Record the operation log path

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

2.Select OBD detect

Confirm the notes and continue

The CAS mileage has been set to 0.

Identify system info is completed.

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

Step 2: Change Instrument Chip Mileage

Disassemble the instrument to confirm the instrument chip

Select M35XX and select the corresponding chip type (i.e 160DOWT)

Follow the overall connection diagram of the instrument chip (ICP method and OBD method) to connect shown in the following figure.

1.Select Modify mileage

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

Confirm use the ACDP standard power adapter and connect Yanhua ACDP device with M35XXX adapter (Yanhua ACDP Module 4)

Detect Pins successfully and then save the result

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

Check the mileage is 140856

Input a new mileage such as 50000

Program execution completed

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

2.Select Backup data

Confirm use the ACDP standard power adapter and Mini ACDP-2/ACDP-1 device connect with M35XX adapter

Test the probe Pins are normal

Save the data and pay attention to the file name

The instrument mileage is modified successfully

BMW CAS4 CAS4+ Mileage Correction with Yanhua ACDP1 ACDP2

Finally, install the dashboard back into the car and check if the mileage on the panel is normal.

Done!

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