ml 350 ambient temp reads 85 degrees
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e320 ml350 xk jag
ml 350 ambient temp reads 85 degrees
Hi Guys,
My 2010 ML350 outside/ambient temp sensor is reading 85 degrees centigrade and is putting the MIL lamp on.
I have replaced the sensor and it made no difference.
Can i check the sensor and wiring??, what ohms/volts should i be looking for?.
I presume the 85degrees is the default setting?
thanks for reading, any advice would be appreciated.
Bob
My 2010 ML350 outside/ambient temp sensor is reading 85 degrees centigrade and is putting the MIL lamp on.
I have replaced the sensor and it made no difference.
Can i check the sensor and wiring??, what ohms/volts should i be looking for?.
I presume the 85degrees is the default setting?
thanks for reading, any advice would be appreciated.
Bob
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
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From: Miami, FL
2003 CL 600
Check the wiring to the sensor itself. odds are they are shorted somewhere. I would have to look up the design on that particular one but usually if it's open (sensor disconnected or wire broken) the temp will be max negative value (-40f or so normally), but if the wires are touching it will go max high (85c sound about right). Trace the harness back up to where it meets the front SAM and check for any damage to the harness. I've seen rodents chew through ABS sensor wires up by the battery and cause all sorts of strange codes.
MBWorld Fanatic!
Joined: May 2015
Posts: 4,037
Likes: 1,012
From: Miami, FL
2003 CL 600
Should be the front SAM, the one under the hood. I'd have to confirm on the diagram but usually the engine bay stuff goes to that one. Although hood switches go to the rear SAM on some cars for whatever reason.
Thread Starter
Junior Member
Joined: Sep 2014
Posts: 21
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e320 ml350 xk jag
Hi Guys,
Thanks for taking the time to answer, just an update to the repair.
After loads of looking and testing resistance,voltage and continuity i traced the fault to the multi plug that connects the wiring harness from the loom to the bumper, the orange wire pin was not making contact.
All working and sorted.
Bob
Thanks for taking the time to answer, just an update to the repair.
After loads of looking and testing resistance,voltage and continuity i traced the fault to the multi plug that connects the wiring harness from the loom to the bumper, the orange wire pin was not making contact.
All working and sorted.
Bob
