According to readings of the coolant temperature on the cluster display (system test nr. 7) the engine temperature is regularily between 110-113 degC (230-235 degF). This seems a bit high. Though the regular engine temperature gauge meter usually shows a normal reading. The car is a 2002 4.4 X5.

Is this normal? If not what could be the possible cause?

For info the car is operated in an environment where the ambient temperature always is in the range of 30-34 degC (86-94 degF).

Further there appears to be a coolant leak. If I top up the expansion tank to the maximum mark the level will drop quite quickly with about 4-5 dl (2 cups), however after that it appears not to drop anymore.