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Climatronic heater/cooler problem

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I have a problem with the climatronic, which SKODA seems unable to solve. It seems to be one issue, which causes problems with both heating and cooling. 

 

Summer problem- Problem med cooling

After ignition on, with clima set to auto and with temperature set point of e.g. about 20°C – Everything OK

  • Clima cools the car down as expected
    • If Auto is deselected, temp set to Low and full fan speed, lots of ice cold air is coming from the vents.

 

After approx. 1 hour drive, with auto setting and e.g. 20°C outside – The problem occurs

  • Noise from fan behind dashboard changes, to a hollow/muffled sound, like blowing into a pipe closed in the far end.
  • The temperature in the cabin rises, and windows starts to fog heavily
  • It does not help to set temperature on low
  • By deselecting auto, set temperature to low  and full fan speed, the following happens:
    • A very light breeze can be felt from the vents, no matter the chosen vents (windscreen, front, and so on)
    • The fan noise is loud, running full speed, but sounds muffled/hollow.
    • The small amount of air escaping the vents is ice cold, but the small amount of cold air volume, cannot defog the windows or cool down the cabin.
  • During driving, the airflow never improves, no matter how much is changes is done on the clima settings (setting clima off and on, change in temperature, change to ECO, change of vents, etc.)

A short shut off of the car (10 minutes tested), do not solve the problem

After long shutoff (tested several times with +1hour), the clima is working again, until approx. 1 hour later, when the problem occur again!

Tested in outdoor temperatures between 20 – 25 °C

 

Winter– Problem with heating

After ignition on, with clima set to auto and with temperature set point of e.g. about 20°C – Everything OK

  • Clima start giving heat as the motor gets warmer as expected
  • If Auto is deselected, temp set to high and full fan speed
    • Clima delivers high volume of warm air.

 

After approx. 10 minute’s drive, with near 0°C outdoor temperature, Clima in auto and e.g. 24°C set point – Problem occurs

  • Noise from fan behind dashboard changes to a hollow/muffled sound
  • The temperature in the cabin falls slowly
  • It does not help significantly to set temperature on high
  • By deselecting auto, set temperature to high and full fan speed, the following happens:
    • A very light breeze can be felt from the vents, no matter the chosen vents (windscreen, front, and so on)
    • The fan noise is loud, running full speed, but sounds muffled/hollow.
    • The small amount of air escaping the vents is very hot, but the small volume of warm air, cannot keep the cabin warm.
  • Tested with low, medium and strong clima profile.
  • During driving, the airflow never improves, no matter how much is changes is done on the clima settings (setting clima off and on, change in temperature, change to ECO, change of vents, etc.).
  • Two things solves the problem
    • Stopping the car, with the engine running. After a few minutes, the fan sound changes, and big volumes of very hot air is coming from the vents. If temperature setting was set to high, the cabin is heated to approx. 30°C in 3-4 minutes.
    •  Shutting the engine off for a while (not tested thoroughly, so not sure about the time needed)

It seems that the time from ignition to problem occurs, depends of the outdoor temperature, and the clima temperature set point. The higher temperature set point and lower outdoor temperature, results in quicker occurrence of the problem, shortest experienced is about 7 minutes, and longest is around 25 minutes)

 

 

    

Conclusion

The cooling and heating basically works fine!

 

I have tested a demo car (Octavia) with the same climatronic for well over half an hour in cold weather, and the problem did not occur, I was sweating heavily in +30 °C for at least 20 minutes J

 

Presumed cause of the problem

The problem occurs because of a flap closing because of some error, which means that the hot/cold air is blocked from entering the cabin.

The fan sound clearly indicates that it is running full speed.

 

By selecting min or max temperature, and selecting full fan speed, a small amount of air escapes the system, which is either very hot or cold

The flap is not sealed with 0-ring or similar, so it is not 100% sealed off, and a very small amount of heated or cooled air is able to pass the flap.

 

SKODAs attempts to solve the problem under warranty.

  1. Diagnostic tool in the shop – no errors
  2. De-pressurize an refilling the cooling system
  3. Updating software (do not know the details)
  4. Replacing regulator, i think? (the guy in the reception did not know exactly what was replaced)

 

 

 

I hope someone may have an idea of the cause. In two months time, we have planned driving to Italy with two small kids in the car, and 1 hour of cooling will be way to little, especially in case of traffic jams in germany     :sweat:

 

not sure this will fix it but if you pull out the CD control unit in the glovebox because the cables on the back of this can snag one of the flap motors if they have not been attached/tied back correctly.

Test it with this out and if all OK put it back in carefuly ensuring the cables cannot snag the flap motor any more.

 

John

  • 5 months later...

I have the exact same problem with a 2011 Skoda Octavia TSI 1.2 DSG. The car was to the dealership twice for inspection during warranty without them managing to reproduce the problem. Anything new here? StampeDK, have you made any progress?

  • 1 month later...

Update: Managed to show the guys at the garage the problem so they could see it by themselves. Spoke to the service guys afterwards who talked to a technician. Seems like they've hade a few  more cars with the same problem and located the error to be a "G3"(?) sensor. They did a error scan and found the sensor not working the way it should, and replaced it. Only spent 1 hour. I will be taking a longer drive during christmas, so I will report back afterwards. I can also give exact specs of the repair/sensor which got replaced..

I'm wondering if this could be the automatic recirculation that is failing?

There is an air quality sensor called G238 in the air intake that controls the recirculation flap.

Maybe there is an additional sensor for humidity also that can trigger the same behavior

I'm wondering if this could be the automatic recirculation that is failing?

There is an air quality sensor called G238 in the air intake that controls the recirculation flap.

Maybe there is an additional sensor for humidity also that can trigger the same behavior

 

It is! That's what the service guy told me. I have the receipt for the repair in my car. Can post it later tonight..

G263 was replaced..

  • 3 weeks later...

I have exactly the same Problem in my new (to me) 2012 vRS estate.   Its covered by warranty and i will be booking it in for repair in the on Tuesday.   I will make a note / print out /email link of this thread but is there anything else i need to tell them to help them out?

 

Many Thanks

2012?

Mk3 didnt come out until 2013.

Yes, Mine is a Mk2 but i have been investigating this issue and looking through all the different forum post of older / newer cars and different models, it seems that this is quite a common problem across the brand but this is the first thread that explains exactly what i have been experiencing.  

Yes, Mine is a Mk2 but i have been investigating this issue and looking through all the different forum post of older / newer cars and different models, it seems that this is quite a common problem across the brand but this is the first thread that explains exactly what i have been experiencing.  

 

I had my car (2011 1.2TSI Octavia) in for repair regarding this issue twice during warranty without them being able to find out what was going on. I came to an understanding that they in the meantime have had this problem on some other cars and the third and last time I went to the auto repair they instantly had an idea about what was wrong.

 

To sum it up:

* They did an error troubleshooting scan on the sensors, one came out wrong (as expected)

* Sensor G263 was replaced

* I can't remember the exact explanation of what was going wrong, but it had to do with automatic recirculation and humidity.

* Troubleshooting and repair took 1 hour

* I've been driving a few thousand km's since, as well as a few longer 600km drives a day without any problem since

 

Hope this helps :-)

I had my car (2011 1.2TSI Octavia) in for repair regarding this issue twice during warranty without them being able to find out what was going on. I came to an understanding that they in the meantime have had this problem on some other cars and the third and last time I went to the auto repair they instantly had an idea about what was wrong.

 

To sum it up:

* They did an error troubleshooting scan on the sensors, one came out wrong (as expected)

* Sensor G263 was replaced

* I can't remember the exact explanation of what was going wrong, but it had to do with automatic recirculation and humidity.

* Troubleshooting and repair took 1 hour

* I've been driving a few thousand km's since, as well as a few longer 600km drives a day without any problem since

 

Hope this helps :-)

Thank you.

I am booking it in tomorrow and will pass on all this knowledge. I will report back with the results

  • 1 month later...
  • Author

My problem is still not solved! Fortunately the cooler only failed once during our summer vacation, and a halt with the motor running for about 2-3 minutes ensured cool air again.

 

However the Cold weather is terrible, the motor has barely warmed up before the heating stops. A halt for 3-4 minutes with the motor running solves the problem, but only for about the next 10 minute drive, then the problem re-occurs and so it continues.  

 

Regarding the error handling:

 

SKODA´s standard analysis tool do not detect any sensor errors. They have changed a part (I do not know which, but it did not solve the problem)

 

I do not know if my climatronic has the G263 sensor. I have not been able to establish the model of my climatronic, so I have not been able to find any documentation on the system.

 

I have a new appointment with a SKODA next week, where I will take a drive with a technician with some analysis equipment. During this drive I will generate the error, and can do this multiple times (after maximum 10 minute drive with 0-2°C outside). I am 90% sure it is a sensor problem (perhaps G263), so he should be able to see if one of the sensors gives out wrong data when the problem occurs and during a halt when the system adjusts some flap again starts providing warm air (it is clearly heard when the flap is adjusted behind the dashboard, and starts providing warm air).  

 

Hope they find the problem SOON, the car is now 3,5 years old, and I reported the problem for the first time when the car was less that half a year old.  

did you run a flap diagnostic?

 

There are multiple flaps which direct the air around. If the potentiometers on there do not deliver plausible results then it starts to go haywire with auto. Does generating heat / up / down / face make any difference? recirc on or off?

 

 - Bret

  • 5 months later...

StampeDK is your Climatronic heater/cooler problem solved? I have the exact same problem and is very eager to have it solved.

  • 11 months later...

After a lot of googling I decieded to find and replace the G263 sensor. This fixed the issue. It is three weeks ago and the climate control works like a charm :-)

Two years ago I had the car at a Skoda garage. Explained the climate control problem but they couldn't find the fault! Simple too bad that an official Skoda garage doesn't have the knowledge that you can find on the internet :-(

  • 3 years later...

Hi guys I have the same issue with very little airflow regardless of setting on the climatronic control, replaced the g263 sensor yesterday and still no change, I have visualed all servos cycling so I'm starting to suspect a broken flap or an obstruction

Get a fault scan done with e.g. VCDS or OBD11, that will show if there is a problem with a heater flap and if so which one.

Hi scanned the system an no fault codes to do with the heating system, 

For the small amount of air that comes out I can adjust between hot and cold which indicates the hot cold flaps are working each side, I can also direct it to the windscreen and to the centre vents on th dash, th fan operates on all settings but sounds loud and kind of muffled, I can use the car with just me but any more and the little air that comes out can't keep the windscreen clear. 

I think I have no option but to fully remove the dash 

  • 4 weeks later...

Finally managed to fix my heating, 

Some idiot had fitted a left hand drive fan which has the vanes orientated in the opposite direction. 

In typical skoda fashion now that that's fixed the matrix appears to be blocked also

  • 2 years later...
On 07/02/2017 at 13:53, StampeDK said:

My problem is still not solved! Fortunately the cooler only failed once during our summer vacation, and a halt with the motor running for about 2-3 minutes ensured cool air again.

 

However the Cold weather is terrible, the motor has barely warmed up before the heating stops. A halt for 3-4 minutes with the motor running solves the problem, but only for about the next 10 minute drive, then the problem re-occurs and so it continues.  

 

Regarding the error handling:

 

SKODA´s standard analysis tool do not detect any sensor errors. They have changed a part (I do not know which, but it did not solve the problem)

 

I do not know if my climatronic has the G263 sensor. I have not been able to establish the model of my climatronic, so I have not been able to find any documentation on the system.

 

I have a new appointment with a SKODA next week, where I will take a drive with a technician with some analysis equipment. During this drive I will generate the error, and can do this multiple times (after maximum 10 minute drive with 0-2°C outside). I am 90% sure it is a sensor problem (perhaps G263), so he should be able to see if one of the sensors gives out wrong data when the problem occurs and during a halt when the system adjusts some flap again starts providing warm air (it is clearly heard when the flap is adjusted behind the dashboard, and starts providing warm air).  

 

Hope they find the problem SOON, the car is now 3,5 years old, and I reported the problem for the first time when the car was less that half a year old.  

An identical problem occurs with my Skoda Octavia 3 FL 2019 2.0 DSG, did you manage to solve the problem?
34 minutes ago, bajten said:
An identical problem occurs with my Skoda Octavia 3 FL 2019 2.0 DSG, did you manage to solve the problem?

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