Access to ambient temp guage

[daveman]

Hello ,
My 2010 Berlingo multispace has non functioning temp guage. 
I have a suitable replacement sensor but just wanted to check on getting access 
to the old sensor in the drivers mirror. There is a strip going all round the mirror 
with the sensor in it. I tried prising this off with a flat headed screwdriver in the groove underneath 
but nothing happened. I did check old posts but they just made it sound easy. Is it this narrow strip all round that needs to be prised off? 
Best wishes to all,
Dave.

[Multispacer]

Before, you go any further are you sure it is the temperature sensor at fault? What is the fault? Is it showing dashes or a massively incorrect temperature in the MFD [Multi-function display] ? If it is, then yes, it is likely to be the sensor.

If on the other hand there is no display at all in the MFD [ie it is just blank where the temperature should display] then the culprit is likely to be the MFD itself.

The sensors do fail and I had one go on my previous Berlingo model [M59] which was showing ridiculously high temperatures which was cured by the sensor replacement. 

I had the same thing on my current vehicle [B9] model Berlingo but in this case the part of the display where the temperature should be was just blank. I went for the sensor again but it didn't cure the fault but a replacement MFD did cure it.

You need to look on my old thread, I think from memory on the B9 model you actually need to prise out the mirror and then release the mirror shell clips from the inside.

https://www.berlingoforum.com/thread-13315.html

[daveman]

Hello ,
My 2010 Berlingo multispace has non functioning temp guage. 
I have a suitable replacement sensor but just wanted to check on getting access 
to the old sensor in the drivers mirror. There is a strip going all round the mirror 
with the sensor in it. I tried prising this off with a flat headed screwdriver in the groove underneath 
but nothing happened. I did check old posts but they just made it sound easy. Is it this narrow strip all round that needs to be prised off? 
Best wishes to all,
Dave.

Hello Multispace,
Thank you very much indeed for your very helpful reply. In fact the display shows three horizontal lines. I shall certainly take the mirror out and see what I can see in there. Will let you know how I get on. Thanks again.

[Multispacer]

With 'dashes' [horizontal lines] in the display it will almost certainly be the sensor. The only other thing I need to add is that after you gain access to the sensor to replace it, you need to splice the new sensor in as it is hard wired in so you need to cut the wires on the old sensor and splice in in the new sensor, so make sure you leave enough wire length on the old wiring to give yourself easy access to splice in the new sensor, any excess wiring can just be coiled up inside the mirror housing. FYI it doesn't matter which way around you connect the wires as the sensor is a thermistor [a temperature sensitive resistor]

[daveman]

Hello Multispace,
As it wasn’t raining here I managed to get inside the driver’s mirror. The temperature sensor was replaced fairly easily by soldering it in and covering the wires with mains sleeving. The end of the base of the sensor had to be filed quite a bit for it to fit in as well as a slight nibble to a plastic rib on the moulding to get it to lie flat. It is very pleasing to have done this myself considering what the garage would have charged. I got the new sensor from a Citroen dealer for £55 but later saw some on Ebay for £10. Getting the sensor out involves opening a single clip and levering the plastic open a bit. Thank you so much.