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Smart Fortwo 451 - SAM Unit Removal and Repair - 3 Lines Fault

In this video I remove the battery and SAM unit on a 2008 Smart Fortwo 451 Passion 84BHP. The car had been displaying 3 lines on the dash along with warning lamp illuminated and there was a complete failure in selecting any gears. The fault was intermittent. I scanned the vehicle for trouble codes/fault codes and the below were found: N15/6 Sprintshift control module (2 DTCs) P1800 Implausible transmission data. P2802 Signals from incremental sensor of component 'M17 (Gear motor)' are implausible. N47-5 (ESP control unit) (1 DTC) Fault in CAN communication with control module 'N15/6 (Sprint shift control module)'. The SAM unit (Signal Acquisition Module) was carefully dismantled and I discovered several failed solder joints on the circuit boards within the SAM unit and re-soldered (re-flowed) these. If you enjoy my videos and would like to help support Auto Knight in creating similar content, please click here: https://www.buymeacoffee.com/AutoKnight Disclaimer - Please be advised that my videos are not instructional and are merely footage of me, with many years of motor trade experience, carrying out vehicle repairs and maintenance. Please conduct your own research, ensure you have the correct tools/necessary expertise and undertake your own due diligence before carrying out vehicle repairs. If in doubt, entrust an automotive technician / car mechanic.