Not an expert on transmissions, someone will chime in, but my tranny was shifting hard and it was the gadget the is attached to the injection pump that controls shifting. Mine was changed and made everthing fine.

The idiot light on the dash that looks like a radiator means to put water in the system. Take a looke at the level in the plastic tank on the passanger side wheel well in the engine bay. Check it cold and see if it needs water. If it does not, it could be the that the sensor is bad. Not uncommon.

Good luck and enjoy the car. Do a search for problem area, One piece of advice, never and I mean never, let the car overheat. Not even once or for a short time time.

Henry

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63 190d (sold)
69 220D (sold)
69 280SL (sold)
76 BMW 2002 (sold)
86 190E-16v (Demised at Laguna Seca Turn 9)
87 300SDL (sold)
87 300SDL 135k
87 300TD 280k (sold)
95 E320W 211k
95 E320w 111k
05 C320 4matic
06 E320 CDI 90k (Totaled by a texting 19 year old girl in a nissan)
2013 GLK 250 Bluetek 4MATIC