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1985 Mercedes Benz 190e 2.3 8v, 5 speed
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50 Posts
Discussion Starter #1
I flushed my coolant last week, after having had the coolant light on for much to long and my car quickly starting to run hot. However after doing this my coolant low light is still on, the engine no longer runs hot and the coolant is visible toward the bottom of the reservoir.
Is there a way to reset the sensor? Whether it be manual or just disconnecting the sensor...? Any help would be great.
 

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IR MODERATOR
1996 Volvo 855GLT, 1993 MB 190e 2.3 8v, 1998 Subaru Outback SUS, 1991 BMW 525, 1998 MB C230
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9,228 Posts
maybe low or the switch may be stuck.
 

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Registered
1985 Mercedes Benz 190e 2.3 8v, 5 speed
Joined
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50 Posts
Discussion Starter #5
The reservoir is filled only to the point before it widens out. Should it be filled higher? As for the bubble idea, its been over a week that the lights been on, I assume it would have worked its way out by now.
 

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Premium Member
1986 190E 2.3-16, 1992 190E 2.3, 2015 GL350 BTC, and 2020 GLS450
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2,395 Posts
Coolant fill level must be at the "kaltwasserstand" (cold coolant level) marking on the side of the overflow tank.

The sensor may have failed due to deterioration. Empty the tank to below the sensor. Unplug the black connector and remove the circlip. Pull out the old sensor and replace with a new one. Reinstall the circlip and replug the connector. Fill to "kaltwasserstand".

Never run a Benz without a coolant level sensor operational.
 
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