Having been driving for 40 years ... the most that has ever gone wrong
on the Transmission side of things is a slipping clutch or a leaky prop
shaft oil seal.

Last week car (New Jeep Cherokee) which has a ZF 9 speed automatic
transmission, would not start, declared "park sensors faulty" - wiped
them clean in case it was just mud.

Still wouldn't start now declared "parking brake faulty" .. car has
electronic & automatic handbrake.

Multiple attempts on manually turning parking brake on & off then it
finally started - only to be limited to about 5mph (found out this is
Limp mode)
Trying to put car back in driveway found any attempt to move to D or R
and I got a big thud and the car jerked .. much like snapping your foot
off the clutch on a manual car.

Switched all off - locked it up and left in 5 mins ..... then returned
and all back to normal, working fine only issue there is now engine
management light on.

Called Main dealer who I bought it from, and they advise they can't look
at it until 19th Jan as workshop is busy !!! (22 days at that point)
and suggest I call out Roadside Assistance (included with car)

Called out roadside assistance ... they advised no roadside assistance,
all they will do as management light is on is 'on truck' recovery to dealer.

It got to dealer who after some pressure at least plugged in Laptop to
diagnose Engine Management light ..... Transmission failure.

Result is I need a new gearbox and new transaxle ........ wow !

The Jeep originated form Willys Jeep of WW2 that was designed to be
reliable and robust.

This car, with less than 10,000 miles, never been off roaded, is having
a complete Transmission replacement - due to software alarms.


Th cost of this must be very high (I'm not paying) .... just as well
JEEPS didn't have software alarms in WW2