OBDSTAR ECU Master Cannot Read Benz CPC5 ECU Solution

Problem:

Tried to connect Mercedes Benz CPC5 ECU with OBDSTAR ECU Master C pack as it appeared. But ECU Master failed to read this ECU.

It gave this message: ECU is locked. Use the corresponding (LOCKED) path to proceed.

Any solution?

Solution:

As the ECU Master indicated, this CPC5 ECU is locked. OBDSTAR could only read and write the “unlocked” version CPC5 ECU on bench mode.

If you encounter a CPC5 that cannot be read or written, it is most likely the factory-locked state (after year 2020). To perform chip-level cloning, tuning, or data repair, you typically need to use tools that support Boot/Glitch mode, or send the ECU to a specialized service provider for unlocking first.

 

FLEX + Korhex expands support for the latest Mercedes Trucks.
The new update adds support for Mercedes Truck CPC5 units installed on vehicles produced after 2020.
Use: Boot Glitch + Korhex + EMFI
• direct access to the SPC58 microcontroller
• support for recent Mercedes Trucks, including Actros and Arocs
• guided step-by-step procedure through FLEX.

Once unlocked, technicians can use supported tools (such as Magic Motorsport Flex with Korhex) to read, write, and back up the internal Flash and EEPROM.

OBDSTAR G3 Update BMW BDC3 BCP Key Copy Function

OBDSTAR X300 Classic G3 released new BMW immobilizer software on November 2nd, 2026.

 

V40.61

Add BMW G series BDC3, U Chassis BCP add keys (by C4-11).

Read original BDC3/BCP key data with C4-11 adapter and copy a new key.

C4-11 adapter is coming soon.

 

 

OBDSTAR G3 Adds Toyota Yaris Avalon 4A B6 IMMO

 

OBDSTAR released new immobilizer software in October 2026.

 

AUTO IMMO SOFTWARE UPGRADE >> 2026.10

Supported Tools:
X300 Classic G3, Key Pro4, X300 MNI VW

ISUZU [Version: V40.40]
Add below functions for LINGTUO:
■ Blade Key Programming
■ Remote Program

AEOLUS [Version: V40.72]
Add proximity key programming function for AEOLUS L8Y.

LIVAN [Version: V40.04]
Add proximity key programming for function LIVAN BLUE BALLOON.

TRUMPCHI [Version: V30.65]
Add below functions for TRUMPCHI HYCAN V09 and AION NEW AION V :
■ Proximity Key Programming(Supported AKL)
■ Program ECM
■ Program TBOX
■ Program ESCL

CHRYSLER [Version: V43.94]
Add proximity key programming function for below models:
■ DODGE ASIA CHARGER POLICE 2019
■ DODGE USA-CANADA CHARGER POLICE 2019

VW [Version: V45.67]

1. Add VW MQB METER ECU Info. for below systems:
   ■ ECM
   ■ TCM
   ■ ELV

2. Optimized software.

ROEWE [Version: V42.30]
Add proximity key programming function for below models:
■ MG GT
■ MG HS PHEV

VOYAH [Version: V40.02]
Add proximity key programming function for VOYAH TAISHAN.

LI AUTO [Version: V40.06]
Add proximity key programming for function LIVAN BLUE BALLOON.

RENAULT [Version: V42.20]

1. Add blade key programming(Supported AKL),Write PFLASH (Recover) functions for below models:
   ■ RENAULT EXPRESS 2021-2024
   ■ RENAULT OROCH 2022-2024

2. Optimized software.

FORD [Version: V45.16]

1. Add below functions for FORD EUROPE MUSTANG 2025:
   ■ Proximity Key Programming(Supported AKL)
   ■ Read DFLASH(C4-06)

2. Optimized software.

TOYOTA [Version: V43.30]

1. Add Manual Select System PROXIMITY TYPE 18 (4A-B6).

2. Add 4A-B6 proximity key programming function for below models:
   ■ TOYOTA ASIA AVALON 2025-2026 TYPE 2(4A-B6)
   ■ TOYOTA ASIA AVALON HV 2025-2026
   ■ TOYOTA ASIA YARIS 2025-2026
   ■ TOYOTA AUSTRALIA YARIS 2025-2026
   ■ TOYOTA EUROPE AVALON TYPE 2(4A-B6) 2025-2026
   ■ TOYOTA EUROPE AVALON HV 2025-2026
   ■ TOYOTA EUROPE YARIS 4A-B6
   ■ TOYOTA JAPAN YARIS 2025-2026
   ■ TOYOTA USA-CANADA AVALON TYPE 2(4A-B6) 2025-2026
   ■ TOYOTA USA-CANADA AVALON HV 2025-2026
   ■ TOYOTA USA-CANADA YARIS 2025-2026

3. 3. Add 4A-BA proximity key programming function for below models:
      ■ TOYOTA ASIA CAMRY 2024-2026
      ■ TOYOTA EUROPE CAMRY 2024-2026
      ■ TOYOTA USA-CANADA CAMRY 2024-2026

4. Optimized software.

   
   
   

    

OBDSTAR ECU Master Adds CM850 EDC17CV82 ECUs

 OBDSTAR released new heavy duty ECU flasher software in October 2026.

HEAVY DUTY ECU FLASHER SOFTWARE UPGRADE >> 2026.10

Supported Tools: ECU MASTER C PACK

ECM [Version: V40.20]

1. Details Added:
   ■ Add SCANIA CUMMINS CM850 MPC555+AM29BL162CB R/W INT FLASH, R/W EXT FLASH (BDM);
   ■ Add CATERPILLAR CONTINENTAL A6E10 MPC5746R R/W INT FLASH, R/W INT EEPROM (JTAG);
   ■ Add DONGFENG WEICHAI WISE15 SPC5634MMLQ80 R/W INT FLASH (JTAG);
   ■ Add VOLVO TRW EMS2.2 MPC5554 R/W INT FLASH (JTAG);
   ■ Add CATERPILLAR CONTINENTAL A5E2V211 MPC5674F R/W INT FLASH (JTAG);
   ■ Add CATERPILLAR CONTINENTAL A5X12I1 MPC5674F+95512 R/W INT FLASH, R/W EXT EEPROM (JTAG);
   ■ Add INTERNATIONAL TRUCK BOSCH EDC17CV82 TC1793 R/W INT FLASH, R/W INT EEPROM (BENCH);
   ■ Add MAN BOSCH MD1CE101(LOCKED) TC299TP R/W INT FLASH, R/W INT EEPROM (Support CS)(BENCH);
   ■ Add MAN BOSCH MD1CE101(LOCKED) TC299TP R/W INT FLASH, R/W INT EEPROM, Unlock ECU (Support CS)(BOOT);
   ■ Add IVECO BOSCH MD1CE101(LOCKED) TC299TP R/W INT FLASH, R/W INT EEPROM (Support CS)(BENCH);
   ■ Add IVECO BOSCH MD1CE101(LOCKED) TC299TP Unlock ECU (Support CS)(BOOT);
   ■ Add IVECO/MITSUBISHI BOSCH MD1CS069(LOCKED) TC299TP R/W INT FLASH, R/W INT EEPROM (Support CS)(BENCH);
   ■ Add IVECO/MITSUBISHI BOSCH MD1CS069(LOCKED) TC299TP Unlock ECU (Support CS)(BOOT);
   ■ Add ISUZU/MAXUS/JAC/YUEJIN/LDV/DEUTZ/SAME/IVECO/LAMBORGHINI TRATTORI BOSCH MD1CS089(LOCKED) TC299TP R/W INT FLASH, R/W INT EEPROM (Support CS)(BENCH);
   ■ Add ISUZU/MAXUS/JAC/YUEJIN/LDV/DEUTZ/SAME/IVECO/LAMBORGHINI TRATTORI BOSCH MD1CS089(LOCKED) TC299TP Unlock ECU (Support CS)(BOOT);

2. Details Optimized:
   ■ Optimized ISUZU TRANSTRON L1.1 SH7058F Read MAPS (BENCH);
   ■ Optimized SCANIA CONTINENTAL EMS S8 MPC5566+95256 Read INT FLASH (BENCH);
   ■ Optimized MB BENZ CONTINENTAL PLD(MR A7) XC2287+95640 Unlock ECU, LockECU (BOOT);
   ■ Optimized MB BENZ VITESCO PLD(MR A8) XC2288+95640 Unlock ECU, LockECU (BOOT);
   ■ Optimized D11K to ACM for VOLVO CONTINENTAL MPC5534M;
   ■ Optimized MB BENZ CONTINENTAL PLD(MR A2) AM29F200B+93C66 R/W EXT FLASH, R/W EXT EEPROM(BENCH);
   ■ Optimized MB BENZ CONTINENTAL PLD(MR A5/A6) AM29F400B+93C86 R/W EXT FLASH, R/W EXT EEPROM A, R/W EXT EEPROM B(BENCH);
   ■ Optimized MB BENZ CONTINENTAL PLD(MR A7) XC2287+95640 R/W INT FLASH, R/W EXT EEPROM(BENCH);
   ■ Optimized MB BENZ VITESCO PLD(MR A8) XC2288+95640 R/W INT FLASH, R/W EXT EEPROM(BENCH).

CHRYSLER [Version: V43.94]
Details Added:
■ Add MB BENZ MARQUARDT GMBH EIS D70F3628 R/W INT FLASH (JTAG);

OBDSTAR DC706 Read & Write BMW MD1CS001 Locked ECU on Bench

OBDSTAR DC706 read and write BMW MD1CS002 Locked ECU on bench successfully.

BMW MD1CS001 (locked ) tc298.
Unlock ok.
Read/ write eeprom and flash ok.
Manual checksum.
All operations performed on the bench with MP001 programmer.
No opening required.

Read ISN code ok.

 

OBDSTAR Adds Audi MLB Virtual Cockpits Cluster Mileage Correction

 Mileage calibration on modern Audi Virtual Cockpits has always been a painful, time-consuming process.
Taking apart the dash, dealing with the risk of damaging the cluster, and spending hours on a single vehicle is something we’ve all had to struggle with.

OBDSTAR has overcome this challenge.

Supports tools:

OBDSTAR X300 Classic G3 with odometer license, OBDSTAR OdoMaster

Audi MLB Virtual Cockpit Mileage Calibration – Now 100% via OBD!

The new Audi MLB Virtual Cockpit Mileage Calibration is now available entirely via OBD.

No cluster removal, no disassembly, and no risk of damaging the hardware.

NEW VEHICLE SUPPORT
2015–2026 MODEL YEARS
AUDI
Q2 · Q5 · Q7 4M · Q8 · A4 8W · A5 · A6 C8 · A7 · E-tron

LAMBORGHINI
Urus

BENTLEY

Right Column:

NEW PART NUMBER SUPPORT
80A 920 790 xx(x) | 4K0 920 790 xx(x)
80A 920 794 xx(x) | 44KE 920 795 xx(x)
81A 920 790 xx(x) | 44K0 920 794 xx(x)
8S0 920 790 xx(x) | 4K0 920 890 xx(x)
8V0 920 790 xx(x) | 4M0 920 790 xx(x)
8W5 920 790 xx(x) | 4ML 920 790 xx(x)
8W5 920 890 xx(x) | 4M0 920 890 xx(x)

Note: Part number variants may differ. Some versions are not yet supported.

Disclaimer:
For automotive professionals only. For lawful instrument cluster replacement, repair, or restoration.
All mileage adjustments must comply with applicable local laws and regulations. Illegal use is strictly prohibited.

 

 

OBDSTAR Update 2015-2026 Audi Mileage Correction

 OBDSTAR OdoMaster and X300 Classic G3 will release new mileage software soon.

Highlights:
NEW VEHICLE SUPPORT

MILEAGE CALIBRATION
AUDI · LAMBORGHINI · BENTLEY


NEW VEHICLE SUPPORT
2015–2026 MODEL YEARS
AUDI
Q2 · Q5 · Q7 4M · Q8 · A4 8W · A5 · A6 C8 · A7 · E-tron

LAMBORGHINI
Urus

BENTLEY

Right Column:

NEW PART NUMBER SUPPORT
80A 920 790 xx(x) | 4K0 920 790 xx(x)
80A 920 794 xx(x) | 44KE 920 795 xx(x)
81A 920 790 xx(x) | 44K0 920 794 xx(x)
8S0 920 790 xx(x) | 4K0 920 890 xx(x)
8V0 920 790 xx(x) | 4M0 920 790 xx(x)
8W5 920 790 xx(x) | 4ML 920 790 xx(x)
8W5 920 890 xx(x) | 4M0 920 890 xx(x)

Note: Part number variants may differ. Some versions are not yet supported.

Disclaimer:
For automotive professionals only. For lawful instrument cluster replacement, repair, or restoration.
All mileage adjustments must comply with applicable local laws and regulations. Illegal use is strictly prohibited.