Question2004 Discovery. M & S light sometime come on (flashing) while driving, resulting in slow speed. There has also been a slight jerk in the tranny. After stopping and restarting the Disco, the light go out?
AnswerHi Monte,
This is a warning that you are in "limp home" mode and that you should have the problem investigated quickly.
It could be as simple as a low battery or an electric fault somewhere on your vehicle, such as a failing sensor.
One 2004 owner wrote that the auto selector sensor failed and generated this warning due to the air-conditioning drain that was dripping on the sensor.
It's also possible that a component within the electronic transmission is at fault.
A LR dealer is the best resource for this and hopefully you are still under warranty.
Regards,
JohnMc