Mercedes locked its Bosch MDG1 ECUs harder than anyone. Since 2021 the MD1CP001 in the diesels and the MG1CP002 in the petrols have meant one of two things: a mail-in unlock, or opening the ECU and soldering to the board. Neither is quick and the second is not something we like doing to a customer’s car.
On 4 September Magic Motorsport released Flex 8.17 with a boot glitch for both ECUs using the Korhex accessory. The ECU is connected on the bench, the glitch takes about forty seconds, and the read and write are about two minutes each. No soldering, no component removal, full backup of the flash and EEPROM before anything is written. The ECU goes back in the car the same afternoon.
Cars it covers
Magic Motorsport list these as examples rather than the full set, so expect more as the vehicle database catches up:
- A-Class W177 A 220 d, 190 PS 2.0 diesel (2021 on)
- GLA H247 200 d, 150 PS 2.0 diesel (2022 on)
- Vito W447 116 CDI, 163 PS 2.0 diesel (2021 on)
- A 45 AMG W177, 387 PS 2.0 petrol (2021 on)
- CLE 53 AMG C236, 3.0 mild hybrid, 449 PS (2023 on)
The same two ECUs sit in the C-Class, E-Class, GLC, GLE, Sprinter and V-Class of the same years, so the list will grow quickly.
Why it matters
The A 220 d and the 2.0 diesel Vito and Sprinter are bread and butter for us and for our dealers, and until now a Stage 1 on a 2021-on car was a three or four day job because the ECU was in the post. A 220 d owners can expect around 230 PS and 480 Nm from a Stage 1; the Vito 116 gains around 40 PS and 80 Nm. Put your registration into the tuning builder for your car’s figures, or read about the Mercedes MD1 and MG1 unlock service we have run for the older cars.
Dealers: the Korhex is an add-on for the Flex. Ask us about it, and about the file prices for these cars, on the dealer enquiry page.
