[Marty Iowa]

I bought the car from an insurance company. It was having a reverse problem, and then wouldn’t start. The insurance company had it looked at, and it did have 2 fault codes come on. M.E. Module - P0805 and the T.C.U. Module - P0900 Operational Fault at Coupling Motor. This is what I found out after buying it. I have no idea what this means. I’m not a mechanic, and bought this as a toy to learn. What parts are these codes for?

 

[rbrtryn]

Sounds like the clutch actuator is stuck or broken. Unfortunately a somewhat common problem with 451 smarts.

There are several DIY pages on the web how to repair or replace the actuator.

If it's not the actuator, it might be the gear change motors that sit on top of the gearbox.

 

[jwight]

The 2008s had a software update to address the reverse issue. You need to check with a dealer that formerly serviced smarts and see if your car got the update.

Smart 2.0 Update Coming for 2008 Model Year (official program name: “smart 2.0 Check