• The Forums are now open to new registrations, adverts are also being de-tuned.

Outside temp stuck

mr. shr

MB Enthusiast
Joined
Apr 22, 2004
Messages
1,881
Just got my W220 back from having waranty/rust repairs done.

All is ok except my outside temp display appears to be stuck on 10 degC.

Any ideas on what might cause this?
 
it goes to its default, something like -39 i think,,, but that may have changed for newer models... are you sure it just hasnt been 10 degrees outside? ;)
 
... are you sure it just hasnt been 10 degrees outside? ;)

I thought this, but checked it against my W202 and that was saying about 12.5 degC a few mins ago.

The W220 was reading 10 when I picked it up this afternoon, stayed at ten as I drove around town, and is still saying 10 now. :confused:
 
If the panel holding the sensor had to be removed to do the repair (front bumper on W202, don't know about the W220) there is a better than even chance that the sensor hasn't been replaced properly. Just because the wire is going into it doesn't mean that it's seated correctly.

How do I know?

Because when I had mine off I bent a pin plugging it back in :o It was very easy to do, in my defence.
 
The sender is under the bumper near side, they can display fixed ramdom faults. Have they been working near there.

They've done pretty much the whole car. (Although not the front bumper!!)
Both front wings were removed and resprayed.
But strange as this sounds but I think they've fitted a new slam panel!!
It's black now, I'm sure it used to be silver. (Could just be me though).
 
If the panel holding the sensor had to be removed to do the repair (front bumper on W202, don't know about the W220) there is a better than even chance that the sensor hasn't been replaced properly. Just because the wire is going into it doesn't mean that it's seated correctly.

How do I know?

Because when I had mine off I bent a pin plugging it back in :o It was very easy to do, in my defence.

The sensor on the W220 is in the same place as the W202.
Guess I need to get under the car.
 
The front wing is close enough.

Look for a small bullet-shaped object poking through a hole in the nearside of the front bumper. That's the sensor. Check that it's plugged in correctly.


Aahh.... too late
 
Last edited:
The front wing is close enough.

Look for a small bullet-shaped object poking through a hole in the nearside of the front bumper. That's the sensor. Check that it's plugged in correctly.


Aahh.... too late

Yep, I've found the sensor and given it a bit of a jiggle to see if it would effect the reading, but no change.

Suppose I could try throwing a bucket of cold water onto it to see if that changes it.
 
Yep, I've found the sensor and given it a bit of a jiggle to see if it would effect the reading, but no change.

Suppose I could try throwing a bucket of cold water onto it to see if that changes it.

Just hold it and think of some one that owes you money, it should reach 33c.

Please note how polite I am on the forum
 
Found the sender. It's only about a tenner from the Stealership so not too bad it I have to change it.
Just gotta make sure this is the fault.
 
Unplug the sensor and that should tell you

It probably is unpluged, that's why it's stuck at 10c.

It probably displays the last known good reading until a new reading is obtained.

Interestingly a fuel gauge still goes down with the engine running even if the level sensor is unplugged.
 
Oops!! :o

Just had a look and the temp was reading 14 degC in the garage.
Pulled it out of garage chucked some water on the sensor. Waited a while and it then went down to about 12.5 (same as W202 that was sitting a few feet away).

So clearly it's registering changes in temp and is probably working fine.

Just seemed very odd that it didn't budge at all yesterday and was different to that of my W202.

I'll keep my eye on it, and if I think there's a fault, I'll do as you say above.

Appologise for jumping the gun, and thanks for the advice anyway.

shr.
 
Oops!! :o

Just had a look and the temp was reading 14 degC in the garage.
Pulled it out of garage chucked some water on the sensor. Waited a while and it then went down to about 12.5 (same as W202 that was sitting a few feet away).

So clearly it's registering changes in temp and is probably working fine.

Just seemed very odd that it didn't budge at all yesterday and was different to that of my W202.

I'll keep my eye on it, and if I think there's a fault, I'll do as you say above.

Appologise for jumping the gun, and thanks for the advice anyway.

shr.

The car was obviously in distress at having to go away and sit in an oven at 40c, and pleased to be home again:)
 
The car was obviously in distress at having to go away and sit in an oven at 40c, and pleased to be home again:)

I missed her too.

(Don't tell mrs. shr)
 

Users who are viewing this thread

Back
Top Bottom