MB ML 350 original file Bosch ME9.7 HW 0261209045 · 120904539 · SW 372831

This is the factory calibration of the 2005 MB ML 350 (200 kW, 272 hp), for its Bosch ME9.7 ECU with hardware 0261209045, part number 120904539 and software 372831 (1037372831). Use it to put the car back to standard, to recover the ECU after a failed write, or as the base of a tune of your own.

An original holds every map as the factory wrote them: ignition, fuelling and the torque limits, the speed limiter and the emissions controls. Tuners start a file from it; workshops use it to put a car back to standard.

The MB ML 350 carries the 350 V6 engine, 272 hp and 350 Nm from the factory. On this engine, Stage 1 usually gives about 292 hp and 375 Nm (+20 hp, +25 Nm). Typical figures for a healthy engine: your car's own result depends on its condition, fuel and parts.

For software 372831 of the MB ML 350 we sell the original and Stage 1, each made from the same original read. Every file downloads straight after payment.

The Bosch ME9.7 ECU in this car is read and written over OBD and on the bench, with tools such as Alientech KESS3, Alientech K-Tag, Autotuner, MagicMotorsport FLEX, CMD Flash and Dimsport New Genius. Keep your own read: compare its hardware and software numbers with the ones on this page before you write the file.

Catalyst off, DTC off and speed limiter (Vmax) off can be built on this file on request, for off-road and competition use: send us your read through our file service and our engineers add them (any file £50, from £30 in packs).

Hardware 0261209045 is the number on the Bosch ECU's label. Software 372831 (1037372831) is the calibration inside it: a read with hardware 0261209045 and another software number needs a different file. Part number 120904539 is the car maker's number for this ECU.