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[atann]

I know I've posted before on this topic, but as I've now changed the cabin filter and I'm having the air con regased. Can I confirm with the external temp reading c/f, Ie its oppsed. The climate control will only work properly when set to either low or high?

[atann]

I know I can get another external sensor cheap off of EBay, but how easy is it to fit? From what I've read, it sounds like the wiring, could be the problem, not the sensor?

[Andy B]

I know I can get another external sensor cheap off of EBay, but how easy is it to fit? From what I've read, it sounds like the wiring, could be the problem, not the sensor?

It's a while since I bought one,  but OE from Vauxhall are/were cheap enough. Your car's sensor is central to the front bumper & easy enough to fit ..... they just plug in. As you say, they say  (I had the nicer looking MFL model    ) later cars had a problem with the plug/socket a bit further back down the loom from the sensor. If its fubar'd, just cut them out & rejoin the wires 

[Doctor Gollum]

Facelift sensor can be changed by opening the bonnet. Takes five minutes if you're blind and stop for tea and cake

[atann]

I’ve looked high and low and cannot find the location of the sensor. Can somebody please upload a picture or diagram of its location? Many thanks.

[Doctor Gollum]

Centre of the bumper below number plate...

Massive clue here...

Facelift sensor can be changed by opening the bonnet. Takes five minutes if you're blind and stop for tea and cake

[Andy B]

I assume that the sensor has come adrift from where it should live then. You're just going to have to look for a bit of loom, with either a sensor on the end or a plug that the sensor should plug onto.

[atann]

Centre of the bumper below number plate...

Massive clue here...

Facelift sensor can be changed by opening the bonnet. Takes five minutes if you're blind and stop for tea and cake

The only plug I can see in that area, is the plug which goes into the back of the windscreen washer
reservoir?

[Doctor Gollum]

Then I would politely suggest that you aren't looking...

From the front of the car, look through the bumper grill below the centre of the number plate and report back... short of coming over and placing your hand on it, I cannot help you any further.

Access is from above though.

[TheBoy]

Where the bottom of the front bumper bends back and under the car, its clipped in there. Central on a FL.

Sensors a cheap from dealer. And are known to fail occasionally.

[atann]

Where the bottom of the front bumper bends back and under the car, its clipped in there. Central on a FL.

Sensors a cheap from dealer. And are known to fail occasionally.

Thanks. Stupidity locked my key in the boot😡 locksmith managed to open drivers door through window, luckily it wasn’t deadlocked😱 I ask him about the sensor and he showed me where it was, can’t believe I couldn’t see it! I think it’s because my car is parked on a downhill slop in direct sunlight. Got home and swapped the sensor, showing 12c instead of c-f, that’s not right at least 22c today in Canterbury. Will keep an eye on its reading.

[atann]

Read 17c today. Which was right. The air con seems colder on low, than it did before I changed the sensor? I didn’t think the sensor made any difference if climate set to low or high?

[Andy B]

Read 17c today. Which was right. The air con seems colder on low, than it did before I changed the sensor? I didn’t think the sensor made any difference if climate set to low or high?

The operation of the a/c on a face lift car is dependant on the outside air temp sensor. Not on an earlier preface lift car though 

[atann]

Read 17c today. Which was right. The air con seems colder on low, than it did before I changed the sensor? I didn’t think the sensor made any difference if climate set to low or high?

The operation of the a/c on a face lift car is dependant on the outside air temp sensor. Not on an earlier preface lift car though 

Andy, I thought low and high settings ignored the outside air temp sensor? Now that car is nice and cold, I don’t want any problems next summer. Would you recommend running in auto 21c all winter too avoid any problems?

[Andy B]

Read 17c today. Which was right. The air con seems colder on low, than it did before I changed the sensor? I didn’t think the sensor made any difference if climate set to low or high?

The operation of the a/c on a face lift car is dependant on the outside air temp sensor. Not on an earlier preface lift car though 

Andy, I thought low and high settings ignored the outside air temp sensor? Now that car is nice and cold, I don’t want any problems next summer. Would you recommend running in auto 21c all winter too avoid any problems?

Don't know about ignoring the outside temp sensor,  but it ignores the interior temp either way & goes to full chat.
Any car with AUTO function on its air con should ideally be run in auto all year round. It obviously cools in summer but also helps with condensation in winter.