2002 Td5 Discovery 2

Hi everyone,

Is there any way of setting the climate control so one side adjusts the temperature for both sides of the cabin? I do a lot of driving alone & it get annoying having to adjust each one separately.

Otherwise I will look into the wiring to see if it is possible to instal a 'master or separate' setting switch.

Thanks,

Once set then it should stay at that temperature. Set it for both sides and then you won't have to alter it. The idea of it is that temperature needs are looked after automatically.

Sorry but what I mean is if the temperature needs adjusting due to changes outside you have to change the passenger setting as well the keep the entire car the same temp.

If your ideal temperature is 21 degrees then set both sides to that and whatever the weather is doing outside the climate control will automatically adjust the cabin temperature to that.

The temperature controls on the climate control system is arrranged so that the two "zones" can be set independantly, within a few degrees of eachother,
Ultimately, the different temperature air will mix and balance out in the rear of the cabin, unless you have the full rear air-con installed.
I normally set both the driver and passenger zones to the same values, but only because I'm a bit of a pedant, but they don't have to be.

brian47 said:

I normally set both the driver and passenger zones to the same values, but only because I'm a bit of a pedant

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+1 Guilty

last time I had issues with mine trying to control the temp it appeared the climate control system never had a happy medium .... was that the thermostat in the fuel cooler had failed this was allowing the heater to get to hot so trying to control temps was very hard.... also air con struggled when set to low

if I drive alone I normally just set the passenger side slightly lower than the drivers never needed to keep adjusting
just in case there is an issue with the climate control run a diagnostic check

ozzyboydeano said:

last time I had issues with mine trying to control the temp it appeared the climate control system never had a happy medium .... was that the thermostat in the fuel cooler had failed this was allowing the heater to get to hot so trying to control temps was very hard.... also air con struggled when set to low

if I drive alone I normally just set the passenger side slightly lower than the drivers never needed to keep adjusting
just in case there is an issue with the climate control run a diagnostic check

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That looks odd, what has happened to it?

Appears a bit Back To The Future ish

MJI said:

That looks odd, what has happened to it?

Appears a bit Back To The Future ish

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i took out the thermostat now i have my happy medium back
unsure what your point about the future ish ?
wether I had an cooler issue or a climate issue??? ...I also have code 22 look it up ....I have a right sun light sensor fault ..........list of codes below how futuristic is that

on the d2 near the ignition barrel you might notice a small vent that can clog also

00 - no faults
11 - in car temp sensor fault
12 - ambient sensor fault
13 - thermistor fault
14 - heater coolant sensor fault
*21 - left sunlight sensor fault - open or shorted
*22 - right sunlight sensor fault - open or shorted
31 - left servo motor
32 - right servo motor
33 - distribution servo motor

ozzyboydeano said:

I also have code 22 look it up

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Run the test again under full sunrise as the light to reach the sensor's both sides, if sun doesnt reach the sensor it throws that fault code without being faulty

sierrafery said:

Run the test again under full sunrise as the light to reach the sensor's both sides, if sun doesnt reach the sensor it throws that fault code without being faulty

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its not me with an issue mate read the posts
I was only replying back as it appears I was being to being to futuristic .... back to the future stuff

considering my fault code has been there for 2 years I really don't think it has any thing to do with sunlight..... as I have ran this test many times day and night in the past ..it could be open or shorted

ozzyboydeano said:

i took out the thermostat now i have my happy medium back
unsure what your point about the future ish ?
wether I had an cooler issue or a climate issue??? ...I also have code 22 look it up ....I have a right sun light sensor fault ..........list of codes below how futuristic is that

on the d2 near the ignition barrel you might notice a small vent that can clog also

Click to expand...

The number 88 is famous for that film, but you need a Delorean

This story is funny!
http://www.independent.co.uk/news/w...peeding-ticket-california-88mph-a7763601.html

My heating to me seems random, having to play with it over a few degrees

MJI said:

My heating to me seems random, having to play with it over a few degrees

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check for fault codes and also check under the dash next to the ignition barrel there is a small slotted vent .... behind this vent there is a temp sensor and small mini fan that pulls in air for the climate interior temp
this normally clogs up with dust and the sensor can sometimes give false readings but not enough to throw any faults

considering the discovery doesn't use any on off heater flow tap it runs engine coolant 24 7 this has allot to do with what settings you have on and off on the digital display

as for random heating temps and having to keep playing with it ......is econ mode on or off and in auto mode ? (in auto mode you might also notice the blowers can vary in speed speed )

the reason I ask is that when I am doing heavy loads or heavy 4wding coolant temps rise slightly ..if I have my heater on in economy mode and also not in auto the engine coolant temp can be slightly felt when under heavy loads for long periods via the heaters... as there is no regulation in coolant flow ....... this is not a bad thing as I iam allowing the heater to take away the extra heat away from the engine

ps make sure the air con works 100% and not short of gas or icing up set of gauges is needed to test the air con suction side and high pressure circuit and match engine RPMs ...this does not throw a fault code on the climate control unit ..(.this might be to futuristic) but from past experience R134A gas is **** as it degrades over time

I never was a big fan of MJ fox but yes seen the movies years ago when I was a kid
just wondering would one of those hovorbourds would be more reliable electronically than the discovery ? or maybe you have issues with your flux capacitor
other wise try driving @ 88 mph and ask some one from the future

I'll check those vents thanks.

I just leave on auto and not eco as running in eco can cause leaks, it does cool enough, but cannot make up its mind if the cabin is too hot or cold.

Error codes, are they on the unit, or do I use my Hawkeye?

MJI said:

I'll check those vents thanks.

I just leave on auto and not eco as running in eco can cause leaks, it does cool enough, but cannot make up its mind if the cabin is too hot or cold.

Error codes, are they on the unit, or do I use my Hawkeye?

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unsure what you mean it will cause leaks ..you don't need to run the aircon every day to keep the front seal lubricated on the air con compressor
does the nanocom or HAWKEYE tell you pressures in the air con unit ...only a set of refrigeration gauges fitted ....it could be possible the air con compressor is cutting out low or high pressure
like I said R134A is **** it degrades over time ...just like a blowing up a balloon one day its fully inflated the next few days it has shrank

MJI said:

Error codes, are they on the unit, or do I use my Hawkeye?

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The air-con error codes are generated and read on the air-con panel. Instructions are in RAVE.

ozzyboydeano said:

does the nanocom or HAWKEYE tell you pressures in the air con unit ...only a set of refrigeration gauges fitted ....it could be possible the air con compressor is cutting out low or high pressure
like I said R134A is **** it degrades over time ...just like a blowing up a balloon one day its fully inflated the next few days it has shrank

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Neither Nanocom nor Hawkeye will read the refrigerant pressure.
In the UK there are quite strict regulations regarding the purging and re-gassing the air-con refrigerant. @MJI, your best bet is to take the vehicle to either Halfords, your local indie if they handle air-con or perish the thought, the main stealer.
There's one notorious place where the air-con pipes can leak; there are some "p" clips which fasten the pipes to the bulkhead and apparently there's a bend just as one of the pipes passes through the clip and it can wear and leak at that point.

brian47 said:

The air-con error codes are generated and read on the air-con panel. Instructions are in RAVE.

Neither Nanocom nor Hawkeye will read the refrigerant pressure.
In the UK there are quite strict regulations regarding the purging and re-gassing the air-con refrigerant. @MJI, your best bet is to take the vehicle to either Halfords, your local indie if they handle air-con or perish the thought, the main stealer.
There's one notorious place where the air-con pipes can leak; there are some "p" clips which fasten the pipes to the bulkhead and apparently there's a bend just as one of the pipes passes through the clip and it can wear and leak at that point.

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it was MJI who was asking how to read THE CODES

@ozzyboydeano
Please check what I wrote again and you'll see that I am able to place a reply to two queries in the same posting; it's something we can do!
I'm fully confident that MJI can read the relevant pages of the RAVE download.
The second reply was to you. You did ask "does the nanocom or HAWKEYE tell you pressures in the air con unit"
Given your propensity for additional dials in the vehicle, no doubt you have a full set of air-con pressure gauges on the top of the dashboard.
The last part of my reply was just general information about re-gassing the air-con system in the UK, I have no idea about the regulations which might or might not be in force in other countries. I was also pointing out a known weak point in the air-con refrigerant plumbing.