Infiniti Q50 (V37) Mercedes B Class (W246) C Class (W205) E Class (W212) SLC/SLK (R172) V/Viano/Vito/Metris (W447) 2012-2020 Repair Kit for Bosch MED17.7.2 Engine Control Unit ECU

Description

This repair kit can be used to repair:
- water pump always on even after replacement
On the MED17.7.2 ECUs used on Infiniti Q50 (V37) Mercedes B Class (W246) C Class (W205) E Class (W212) SLC/SLK (R172) V/Viano/Vito/Metris (W447) 2012-2020. This ECU is used on M270 and M274 engines.

Included in the kit:
40077 Driver (throttle faults)
8909000864 * 2
40110 Driver
SMD284 (pressure sensor faults)

Not all chips may need replacement always, but the kit includes whatever is needed to complete a job on most situations where the water pump is not the problem but it keeps staying on. If other issues are present (e.g. short circuits, no communication), the kit may not be enough, so be careful!

To exclude software issues we recommend flashing an original file in BENCH or BOOT mode - OBD may not reach out to all sectors like in BENCH/BOOT mode which is the case shown in the video where we replaced even the CPU to stay safe.


Info
Type: Engine Control Unit Repair Kit
Model: MED17.7.2
Manufacturer: My Supercar Expert
Brand: Mercedes
Manufacturer Part Number: 
Vehicle Part Number: 
Compatible Vehicle Part Numbers: 

Software Version: -
Other Part Numbers:

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$50.00

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  • Shipped today? Order within: Aug 21, 2026 14:00:00 +0800
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      Before you order...

    Check on the "Conditions" paragraph right above if any device is needed for coding or programming this product.

    On your purchase, you will receive detailed instructions on how to install your new part.

    Remember you can always contact us in advance for any info!

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    The product has been tested before shipping.

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    For USA market please check here.

    Description

    This repair kit can be used to repair:
    - water pump always on even after replacement
    On the MED17.7.2 ECUs used on Infiniti Q50 (V37) Mercedes B Class (W246) C Class (W205) E Class (W212) SLC/SLK (R172) V/Viano/Vito/Metris (W447) 2012-2020. This ECU is used on M270 and M274 engines.

    Included in the kit:
    40077 Driver (throttle faults)
    8909000864 * 2
    40110 Driver
    SMD284 (pressure sensor faults)

    Not all chips may need replacement always, but the kit includes whatever is needed to complete a job on most situations where the water pump is not the problem but it keeps staying on. If other issues are present (e.g. short circuits, no communication), the kit may not be enough, so be careful!

    To exclude software issues we recommend flashing an original file in BENCH or BOOT mode - OBD may not reach out to all sectors like in BENCH/BOOT mode which is the case shown in the video where we replaced even the CPU to stay safe.


    Info
    Type: Engine Control Unit Repair Kit
    Model: MED17.7.2
    Manufacturer: My Supercar Expert
    Brand: Mercedes
    Manufacturer Part Number: 
    Vehicle Part Number: 
    Compatible Vehicle Part Numbers: 

    Software Version: -
    Other Part Numbers:

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