One problem related to transfer case has been reported for the 2003 Land Rover Discovery. The most recently reported issues are listed below.
Own a 2003 Land Rover Discovery. Was driving when vechicle started to vibrate and drive rough - immediately after that, a noise was heard coming from underneath the vechicle. The car immediately stopped while the engine was still running and would not move. The vehicle was towed to a mechanic. They found that the front drive shaft "double spicer had broke at the transfer case mounting point and would need a new drive shaft. The vehicle was repaired. A case was filed with Land Rover - however, I am also documenting this as a saftey concern so that others could be aware of this danger behavior of the vehicle stopping immediately without warning in the middle of the highway. This could have been very fatal if vehicle would have been driven during a high traffic period. This incident was also very frighting for myself and the kids that were in the car with me and I am praying that Land Rover take this safety issue very serious and issue a recall for all of their Land Rover models (not just the range rover) before someone get seriously hurt from this abnormal failure.