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brownjeff, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 13886
Experience:  ASE Certified Technician, 17 years experience, Dealership Certified, Service Manager for 15 years
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Where is the thermostat located on a 1992 190e 2.6?

Customer Question

where is the thermostat located on a 1992 190e 2.6?
Submitted: 8 years ago.
Category: Mercedes
Expert:  brownjeff replied 8 years ago.

Follow the top radiator hose and you will find it. I will attach a picture to help. If you still need help just reply, if not click ACCEPT when we are done.






Thermostat Housing

ATo crankcase
BFrom cylinder head
CTo radiator (top)
DFrom radiator (bottom)
EFrom heater
11Top section of coolant thermostat housing
15Main valve
14Bypass valve
8Coolant thermostat
9Ball valve


  1. Drain coolant at radiator.
  2. Unscrew bolts (12), tightening torque 6 Nm (4.5 ft lbs) .
  3. Place top section of coolant thermostat housing (11) with connected hose to the side.
  4. Remove coolant thermostat (8).


  • Renew 0-ring (10).
  • Install coolant thermostat (8) so that the ball valve (9) is at the highest point.
  • Install in the reverse order.