Issues with 05 Fiesta

[Blue_XR]

I have a friend with an 05 Fiesta and she has the following issues. I got her to write me a list as you can see. This car has been sent to a ford dealer but they couldnt diagnose the problem as apparently it wasnt showing any error codes.

- When driving my inside middle reading light will flick on randomly and then a few minutes later will turn off.

- The warning sign near odometer says my doors are open however they are all closed, if I try to get out of the car and lock the vehicle at this time I am unable to do so and need to wait until that sign turns off a few minutes later.

- The engine mechanical warning sign near the odometer is generally always coloured (orange). **With this one I am getting her to check her oil and coolant levels so it could be a faulty sensor.**

- When driving in any gear my car will slow down and I really need to push in the accelerator to get it moving again, I may be in first gear at a red light and my car will begin to shake a little/make a bit of noise and the revs will be flickering up and down rather than being stable.

Any help with the above problems would be apprecitated