WATER GETTIN IN MERCEDES BENZ C240 1996 - 2002 Mercedes-Benz C-Class

Question edited for clarity.
Question moved to Mercedes Benz C-Class.

For that you need the dealership to reprogram it. The Body Control Module is probably controlling that.

You have an issue no one else has ever encountered.

https://www.google.com/search?q=Mercedes-Benz+C-Class+the+windshield+washer+spray+water+only+5+times

..

intake leak or cylinder leak

fan clutch . or the electric fan . relays or fan switch.

It could be a number of reasons, but start with the simple ones first. Maybe the thermostat ? , remove it from its housing and place it in a pan of cold water on the stove. Turn on the heat on a low light and see if it opens as the water gets hot. If no movement as it reaches boiling point it needs to be replaced.

change water pump, the seal is gone

REPLACE THE BRAKE SWITCH

what would then approx labor cost be on installing a water pump on Mercedes e320

The oil cooler needs replacing!

There's a bleed-hole to warn you that it's time to change the water-pump. Also look around the thermostat to make sure its not faulty.

You might have to replace the clutch master and slave cylinders. What is the correct year and model of your car?