Our 05 ForTwo has been intently getting stuck between gears. Turning off the ignition multiple times, then it will be fine. It finally got bad enough, and I was able to diagnose it. I also finally have codes.
P1917-Over Current Cut Out
P2402-Transmission Blockage-Function Failure
P2403-Gear Shift Operation had to be Repeated.
P1925-B43 Gear Position Sensor
Reading multiple treads in here and other sites, I decided to look for wiring issues. I found the wire to a sensor on the end of a transmission to be worn through. This goes to, and I believe, a shaft speed sensor. (Any manuals I have access to don't have Smart Cars listed till 2008, so I can't ID it)
The attachment is of the codes and wiring.
https://photos.app.goo.gl/5X36vYbm6Jn1bE8fA
What do you use for manuals? I want code descriptions, flow charts and wiring diagrams. I can't locate a good aftermarket supplier. At work, we use IdentaFix, and Pro Demand, but they are American companies, and they don't acknowledge the Smart Car existed till 2008.