Read VAG MQB RH850 Dash with Xhorse Multi Prog rh850 Adapter

Now, the Xhorse MQB RH850 V850 Adapter for Multi-Prog is available. It supports reading VW 4th gen Johnson Controls 34xx series, MQB-RH850(R7F) series and MQB 34xx series instruments. Required to use the MultiProg Programmer meanwhile.

For those who need to calculate immo data, VVDI2 or VVDI Key Tool Plus are both good choice. Following we’ll demonstrate the process on how to read MQB48 R7F701402 instrument data.

Connection

Open Multi-Prog software, find the option to view the connecting diagram.

Device >> MQB48-LOCK(R7F701402)-READ(VW->MQB)

• Remove these 8 components, then scrape of the PCB mask.
• Solder the wires to connect the RH850/V850 Adapter and instrument. Secure them with acetate tape.
• Continue soldering the wires on the other side. Once the soldering is successful, connect the adapter, Multi-Prog, computer and VVDI2. Don’t forget to power the Multi-Prog.

Read Data via MULTI-PROG

Now, let’s proceed to read the data.

Crack reading >> OK

*You can check the read progress in the bottom left corner. Wait patiently for a few minutes…

After successful reading, save the data file.

Read MQB Data via VVDI2

Open VVDI software.

VW >> Key learn >> MQB platform instrument immobilizer >> Instrument with locked NEC35xx(MQB48, VDO/JCI) >> Decode immo data >> YES, load encrypt data without extern EEPROM

Press OK to save MQB48 immo data file!

The file can be used for making dealer key & adding key.

This is the usage method of MQB-RH850/V850 adapter for MULTI-PROG. No cutting wires, no lifting pins. Significantly reduces the risk of instrument damage. Very practical!

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How to Unlock BMW CAS4 with Xhorse Multi Prog

The instruction is to force Unlock BMW CAS4 with Xhorse Multi Prog if simple Unlock does not work.

Connect CAS4 module with multi prog via mcu adapter.

First we try simple unlock.

Select CAS4-5M48H-R/W/UNLOCK option

Select Unlock

Confirm you already backed up eeprom and flash.
Unlock failed. Then we try force unlock.

Select CAS4-5M48H-Force UNLOCK option in multi prog software.

Press UNLOCK.
Unlock CAS4 chip successfully.

Then select CAS4-5M48H-R/W/UNLOCK again

Read chip ID.

Read D-flash and P-flash then save.

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How to Read BMW EWS4.4 EEPROM with Xhorse Multi Prog

 You can read BMW EWS4.x immo box by soldering or with Xhorse EWS4 solder free adapter. Here we show how to read EWS4.4 with Xhorse Multi Prog via soldering.

Remove EWS4.4 immo box

You will need mcu adapter to read this data.

Run Multi Prog software, select Immobilizer->BMW->EWS4.x BMW

Check wiring diagram

Solder wiring to the EWS4 module via multiprog MCU adapter

Read data

Read chip eeprom very fast. 33s only.

Now you can write key with vvdi2 or other programmers using this dump.

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Read and Write DCM7.1AP ECU by Xhorse Multi Prog

 Xhorse Multi Prog read and write TATA Dcm 7.1AP ECU successfully in boot mode.

multi-prog will show you boot pin out.

Read chip ID success.
Read Dflash in 51s
Write Dflash in 14s.

Images attached:

Xhorse Multi Prog Read Suzuki Swift ME17.9.64 ECU

 Suzuki Bosch ME17.9.64 ecu is supported by xhorse multi prog. It will read and write this ecu on bench mode.

It works but the pinout is incorrect on multi prog.

In the Multi prog program. There is a bosch part number lookup. Use the numbers of the ECM and narrow your search. Then use that information to look up the ECU pinout online.

According to our customer’s feedback. the pcm flash/pcmtuner wiring diagram works no issue.

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