Moving data from a damaged control unit
Control Unit Cloning and Data Transfer
An electronic control unit has failed and a new one is expensive? Sometimes a compatible used unit can replace it if we can transfer the settings from the original. First, we check whether the old unit can be read and whether the replacement is suitable. We explain any extra work needed on the car before proceeding.
AI-адаптация фото AUTOLAB; мелкие детали могут отличаться от оригинала
- 01
Check the old unit
We assess how badly the original unit is damaged and whether its necessary data can still be read. Sometimes a unit no longer works in the car, but its memory is accessible. If it is badly damaged, a transfer may not be possible.
Show example
CHECKING THE ORIGINAL UNIT$ EXAMPLE INITIAL CHECK> POWER ................ CHECK> MEMORY CONDITION ..... CHECK> CAN DATA BE READ ..... ASSESS$ demonstration, not vehicle resultsroot@diag-lab:~$ ▌CHECKING THE ORIGINAL UNIT$ EXAMPLE INITIAL CHECK> POWER ................ CHECK> MEMORY CONDITION ..... CHECK> CAN DATA BE READ ..... ASSESS$ demonstration, not vehicle resultsroot@diag-lab:~$ ▌ - 02
Find a suitable replacement
A used unit has to suit your car, not just look the same. We compare the part number, version and whether the required information can be transferred. Checking it before purchase can prevent wasted money.
Show example
WHAT WE COMPARE BEFORE BUYINGPART NUMBERCOMPAREUNIT VERSIONCHECKSOFTWARECONFIRMCOMPATIBILITYVERIFYWHAT WE COMPARE BEFORE BUYINGPART NUMBERCOMPAREUNIT VERSIONCHECKSOFTWARECONFIRMCOMPATIBILITYVERIFY - 03
Save what can be read
If the original unit allows it, we read the information needed and save a copy before transfer. This may include engine settings, vehicle configuration or starting-system data. Not every control unit allows all of its data to be read.
Show example
WHAT DATA MIGHT BE NEEDEDSTARTING SYSTEMIF AVAILABLEENGINE SETTINGSCHECKVEHICLE SETTINGSCHECKUNIT DATACHECKMEMORY ACCESSIF AVAILABLEWHAT DATA MIGHT BE NEEDEDSTARTING SYSTEMIF AVAILABLEENGINE SETTINGSCHECKVEHICLE SETTINGSCHECKUNIT DATACHECKMEMORY ACCESSIF AVAILABLE - 04
Transfer data to the replacement
When both units are compatible and the original data is available, we write the necessary information to the replacement. Sometimes the car still needs extra setup to make the unit work with the keys or other systems.
Show example
ECU_CLONE — DATA TRANSFERSRC · ORIGINAL
DEMO 0x7F2A
CHECKSUM (DEMO): 0x9C41
→DST · DONOR
0x????
WAITING
On-screen illustration only, not a real programming operation or compatibility check.
ECU_CLONE — DATA TRANSFERSRC · ORIGINAL
DEMO 0x7F2A
CHECKSUM (DEMO): 0x9C41
→DST · DONOR
0x????
WAITING
On-screen illustration only, not a real programming operation or compatibility check.
- 05
Check the result
After transfer, we check that the replacement unit responds and that the accessible data was written correctly. Final checks of starting and other functions may need to be performed with the unit installed in the car.
Show example
EXAMPLE CHECK AFTER TRANSFER// READY TO RUN
EXAMPLE CHECK AFTER TRANSFER// READY TO RUN
Inspect the damaged unit
We find out whether it responds and whether the information required can still be read.
Check the used replacement
We compare part numbers and versions to avoid selecting an unsuitable replacement.
Save a copy where possible
We save the data accessible from the original unit. A complete copy is not always possible.
Move the necessary data
We write supported data into a compatible replacement, where the procedure allows.
Explain what was completed
We tell you what information could be saved and what still needs to be done on the car.
Check the replacement unit
We check whether it responds after programming. Starting and other functions may require checks in the vehicle.
A similar-looking unit may not fit
Units that look identical can have different software or hardware. Check compatibility before buying.
The original may be too badly damaged
If the required data cannot be read, we may be unable to transfer it.
Additional setup may be needed
The unit may have to be matched to the keys or other systems after it is fitted.
There is no single method for every unit
The approach depends on the specific vehicle and type of control unit.
Protected operations require proof of ownership
Work involving vehicle security and starting systems requires ownership verification.
A completed transfer is not a repair guarantee
The replacement must still be tested in the car, since the original problem may have another cause.
// SUMMARY: Send us the part number or a photo of the old unit and the proposed replacement. We will check the options and agree the work before transfer.
// Removed control units can be sent from another city by prior arrangement. Please provide the vehicle model and part numbers of both units. If the original is badly damaged or extra setup is needed after fitting, we will discuss the options and cost before proceeding.
Other AUTOLAB services
Ready to start the job?
Describe the problem in the contact form — we reply within a day.