Check resistance value of the sensor, plugs in under the fuse box.
At 68F the sensor should read 3750+-50ohms
At 32F the sensor should read 9800+-100 ohms.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)