MG ZS EV Steaming up windows

[Chris154]

Is one of the drain holes for the sun roof blocked by any chance ?.

Haven't had a chance to look yet, are they easy to spot?

 

[Lovemyev]

Haven't had a chance to look yet, are they easy to spot?

When you open the sun roof, do you have any standing water around the frame ?.
I sm puzzled why your blind is soaked ?.
I have just opened my roof for the first time since last summer and the netted blind is perfectly dry.
You could try opening the sky roof right open, then take a jug of water and pour it in the surround, and watch it drain away ( or not ).

 

[Chris154]

When you open the sun roof, do you have any standing water around the frame ?.
I sm puzzled why your blind is soaked ?.
I have just opened my roof for the first time since last summer and the netted blind is perfectly dry.
You could try opening the sky roof right open, then take a jug of water and pour it in the surround, and watch it drain away ( or not ).

Just made a short journey on the motorway and wiped the blind and the rim of the actual sunroof at the front before driving away, but didn't check if water is pooling.
Drove with the sunroof open to try give it a good dry out with air and it seems to be dry now. Doesn't seem to be anything blocking the front water vents. Will check over the next couple of days to see if the moisture returns and if it does I'll go back to MG and ask them to look at the seals there more closely.
Will try the jug later on, thanks for that suggestion

 

[Cocijo]

When you open the sun roof, do you have any standing water around the frame ?.
I sm puzzled why your blind is soaked ?.
I have just opened my roof for the first time since last summer and the netted blind is perfectly dry.
You could try opening the sky roof right open, then take a jug of water and pour it in the surround, and watch it drain away ( or not ).

If it’s any help my sunroof fly-blind deflector was always wet after rain. I never had any issues with water leaks - rattling yes, but water ingress no!

 

[Lovemyev]

Just made a short journey on the motorway and wiped the blind and the rim of the actual sunroof at the front before driving away, but didn't check if water is pooling.
Drove with the sunroof open to try give it a good dry out with air and it seems to be dry now. Doesn't seem to be anything blocking the front water vents. Will check over the next couple of days to see if the moisture returns and if it does I'll go back to MG and ask them to look at the seals there more closely.
Will try the jug later on, thanks for that suggestion

There is usually four drain holes, one in each front corners and another one at the both rear corners.
The sun roof tray has pipes that attach to the sky roof frame, these pipes pass down the “A” post and “C” post of the bodyshell.
Water ? is directed to each corner and then carried down the pipes and out onto the road.
If you pour water into the front section of the tray on a dry day, you will see and hear the water leaving the car.
At the front, it is usually behind the front wheel, roughly when the front wing meets the front door.
There should not be any standing water ? pooling in that sky roof frame.
If that netted blind is sitting in water constantly, then green mould will start to form on the net.
Restriction in water ? getting away, can be caused by a build of wet dirt and even leaf ? debris.
Worth a check anyway !.

 

[Chris154]

Tanos for

There is usually four drain holes, one in each front corners and another one at the both rear corners.
The sun roof tray has pipes that attach to the sky roof frame, these pipes pass down the “A” post and “C” post of the bodyshell.
Water ? is directed to each corner and then carried down the pipes and out onto the road.
If you pour water into the front section of the tray on a dry day, you will see and hear the water leaving the car.
At the front, it is usually behind the front wheel, roughly when the front wing meets the front door.
There should not be any standing water ? pooling in that sky roof frame.
If that netted blind is sitting in water constantly, then green mould will start to form on the net.
Restriction in water ? getting away, can be caused by a build of wet dirt and even leaf ? debris.
Worth a check anyway !

I'll have a good look and when its been dry enough for a period of time, I'll definitely check all 4 drain holes with a jug of water.
There is definitely the start of some moulding on the net, I'm going to give it a good clean and definitely will check water is draining through all 4 drains ?

 

[Lovemyev]

Tanos for

I'll have a good look and when its been dry enough for a period of time, I'll definitely check all 4 drain holes with a jug of water.
There is definitely the start of some moulding on the net, I'm going to give it a good clean and definitely will check water is draining through all 4 drains ?

The below photos were taken by a member who had water leaking in to the boot of his car.
After carrying out some water tests, water could be seen leaking into the boot on the drivers side.
After some investigations by the owner, he discovered that the pipe that leaves the sun roof tray, had not been connected to the drain tube that directs the water away from the car.
I have just included them for reference only so you can see the drain pipes / tubes.

 

[BrianG]

These things can happen to your windows of course when parked up late at night…

Those were the days?

 

[DB Go Rex]

 

[bryer]

Probably the best £7 I've spent on stuff for my ZS EV.

Rain-X Anti Fog wipes

One application lasts about 3 months.

 

[djenson]

Use A/C with auto mode. Most of these issues are caused by energy conscious drivers using eco mode or running the fan low with low heat, which over time, leads to excess moisture build-up within the cablin. It's been a problem in the PHEV where owners are turning off the climate completely to use EV mode in the winter, then being surprised with it misting up when left overnight. Auto mode makes use of a humidity sensor in the car so it is aware of the moisture level, and it has the external temp and internal temp sensors, so its able to calculate the dew point - when the windscreen is going to mist up (yes, it does know better), and can adjust fan speed or AC compressor speed as required. It's also convenient having the set and forget ability.

In terms of energy use, lets be real. Unless you are stretching the range on a long trip, or are on low battery, the change in energy use will be negligible. Just the 50 KwH battery has the energy to run a household fan heater on max for 25 hours - over a day. When you consider the average trip length - maybe 30 minutes, an hour max? - you are using at most 2 KwH towards to climate - 6 miles in these wintery conditions.

Electric MGs also make use of a variable speed air conditioning compressor, which will barely be running in the winter, so once again, its energy use is negligible compared to the energy used by the drive motor

If noise is a concern in auto mode, you can use the menu pointed out in #4 by @N2STY to set the fan intensity in auto mode to confort, which will somewhat reduce the speed at which it is able to reach the set temperature, but will still have the benefit of being able to mitigate condensation issues.

In short, consider how much money/range you are saving in contrast to convenience. It might be worth it to you, but it might not.

Probably the best £7 I've spent on stuff for my ZS EV.

Rain-X Anti Fog wipes

One application lasts about 3 months.

It must be my application, but the anti-fog rain x product creates this haze on the windscreen - noticeable in the low sun - which keeps coming back for me however many times i clear it with a cloth and water as it says - Is this an issue for you or did i just apply it wrong?

 

[bryer]

It must be my application, but the anti-fog rain x product creates this haze on the windscreen - noticeable in the low sun - which keeps coming back for me however many times i clear it with a cloth and water as it says - Is this an issue for you or did i just apply it wrong?

I've not had a problem with hazing. You have to apply it to a warm windscreen according to the application instructions. Then allow it to full dry, then wipe over with a dry microfibre cloth.

 

[GavinThain]

How?

Normal Mode, No Recyc

 

[Gandalfharrow]

This is my biggest gripe with the air conditioning system. It's happened to me before where I've started a journey by manually changing the vent mode to 'external' and about 30 minutes later it's defaulted back to 'Recirculation' for no reason, it's frustrating as all hell!

This is all strange my car ZS MK2, long range appears to stay as I set it.

 

[drmcw]

energy conscious drivers using eco mode

That's not a description I would use

 

[Bubs]

I had this issue with misting up windows, to the point I was getting droplets forming.

Took a good window cleaner spray and gave them a good polish. Much much better now. Still mists up with a light must but ten seconds of hot air clears it now rather than minutes.

 

[Lovemyev]

I don't believe I fell for the old "Recirc Default Mode" today .
We made a fairly short journey to meet up with family today.
Used the App to start warming up the cabin before we left, all was great.
The heater was in use for the out going leg.
Had coffee and a chat and left for the return journey home, HVAC heat still in use as the car booted up.
After travelling about 5 miles, I just caught sight of both of the rear side windows just starting to mist up, quick glance at the info screen and sure enough the HVAC had defaulted back into in recirc mode !.
I quickly switched OFF recirc mode and now the air now being pulled in from outside and then passes via the heater unit and the windows started to clear within a few miles.
I also find by having the circular side vents constantly open and slightly angled towards the front side window glass, this helps keep the glass clear from mist appearing.
When open, warm air passes via these circular vents.

 

[Pebble]

Used the App to start warming up the cabin before we left, all was great.

Must check this on ours - are you saying that when using the app to preheat the car, the re-circ sets itself to cabin/internal only and stays on that setting? This might explain why mine's been on internal for two weeks and have had misting problems. Now set to external and things are much improved.

 

[Lovemyev]

Must check this on ours - are you saying that when using the app to preheat the car, the re-circ sets itself to cabin/internal only and stays on that setting?

I think when you use the App to preheat the cabin, it defaults to "Auto" mode.
When you enter the car, just bring up the HVAC screen and check which direction the air is being drawn from.
Also, if you leave the car and the HVAC is running and you then close the car down, when you boot up the car again, the HVAC will be reactivated.
It can default back to recirc ON.
I try to remember to check air direction each time I use the HVAC system now.
The first spotted this issue on the ZS EV Gen 1, but it was a little easier to spot because there was a recirc manual button below the head unit.
The orange light in the manual button would light up as a visual warning.
The Gen 2 facelift model has no manual recirc button, but air direction is selectable in the bottom right corner of the info screen.
If you have the "Home" screen up and not the HVAC screen, this can easily be missed.
This can leave owners wondering why their cars are misting up so quickly ?.
I am not saying this the WHOLE problem, but it is a major contributor to the problem.
If you enter the car with any damp clothing etc, then in recirc mode the interior of the car will fog up almost instantly.
Increasing the fan speed will only accelerate the problem.
I do remember the day we first had a test drive in the ZS EV back in 2019.
The weather was shocking, it was raining cats and dog's.
We entered the car and our jackets where damp.
As we left the dealership, the car almost instantly started to mist up fast !.
I was increasing the speed of the fans, in an attempt to clear the windows.
We had to pull the car over, as it became impossible to see out of any of the windows.
Recirc had auto defaulted ON and that was the issue.
Lesson quickly learnt on day one !.

 

[N2STY]

I think when you use the App to preheat the cabin, it defaults

Yes I have my pre heat set hi (24to26c) so if I use it when I get in to drive it stays on pre heat temp until I turn it down and yes pre heat uses auto as default so stays on last command till next changed