Part Number

Bosch 0 261 209 292 and Mercedes-Benz A 273 153 65 91

Fitment/Interchange

You must match your part number exactly as seen above. If any numbers are off compared to your original it will not work properly. See below for install notes.
• Ecu will fit 2007 to 2011 CLS350 and S550 models with an exact part number match.

Tech Notes

ECU has been tested with our state of the art vehicle simulator which tests over 25 circuits of the ECU! Some of those are listed below:

• Reference Voltage Good!
• ECU powered up and has communication!
• ECU fuel pump/main relay test good!
• The problem areas on the PCB that cause a no crank with the cooling fan running have been tested good or repaired.
• ECU injectors/coils circuits test good

Install Notes

• Disconnect the negative terminal of the battery. Make sure the battery connector is not touching the battery post.
• Disconnect and remove the module to be replaced.
• Install and connect the replacement module.
• Connect the negative terminal of the battery.
• Program the ECU to your vehicle.

Item Condition

• Pins perfect, none are broken or bent
• Mounting tips/pins may or may not be included. You can easily swap the mounting pins from yours onto this working unit prior to install.

Warranty

This ECM comes with a 90 day warranty from the date of purchase. Please keep a copy of your purchase record which we will send with your item.