Keeping MME Interior Cool on a Hot Day?

[Londonboy49]

Yep black interiors and heat. I put a white cotton sheet over the dash and front seats.

Sponsored

 

[HuntingPudel]

I usually just switch off the power-down timer and lock the car with the [7-8] [9-0] buttons. Just make sure you don’t have any fobs stored in the car that a thief could find and use.
<SNIP>

^^THIS^^

Professional thieves know way more about where a key can be hidden than any normal person does. ??

 

[hartmms]

Well, not quite.

As has been stated in thread after thread here (and elsewhere), the Mach-E glass top is treated, and doesn't let in heat like say a Lightning's sunroof. Residents of AZ and other states have proclaimed this year after year, yet there's the constant "I need a shade".

When it's >110 outside, any amount of direct sun feels oppressive. It really triggers a strong "I gotta find shade, now!" reaction. The 1% or so of IR energy that gets through the glass roof is too much (at least for me). My sun shade stays up from May-Oct.

 

[azerik]

Something I noticed with the sun shade was the one iI got had this 'reflective' thing that could be put in it. Which works I suppose, but it did trap heat between it and the roof so it was always warmer at the roof because it was a heat sink. Without it there was a shady fabric thing, which also works to create shade and lets air get to the glass to cool it. For the last 2 years I've left it out and leave the drivers vent next to the middle screen pointed up at the roof. It helps cool the glass once driving. However the remote start seems to like to blow air, I don't know, inside the dash somewhere. Because I can't feel AC when I get in with the car remote started. But If the car is running then it blows air all around the car like I'd expect. I'd love to find the setting that changes remote start from 'kinda blow air' to 'hurricane mode'. ( the AC in my 13 yr old FFE blows much harder (hurricane mode) and colder than the MME ever has)

 

[ShaggySS]

I usually just switch off the power-down timer and lock the car with the [7-8] [9-0] buttons. Just make sure you don’t have any fobs stored in the car that a thief could find and use. The car won’t go anywhere without a key present.

Wow! Didn't know this. I figured if I left my car on and locked, someone could simply break the window and drive off. I never actually tested this for obvious reasons, but it's a great piece of information. Thanks!

 

[devmach-e]

I've mentioned this before, but it bears repeating:

I have a 2016 Highlander Hybrid with a panoramic sunroof, and a sliding shade for it. I put a temperature probe in the Highlander with the sunshade closed, and another probe in the Mach-E with its glass roof. Both probes were in a sun-sheltered area, so not directly exposed to direct sunlight.

The Mach-E was a good 10 degrees cooler than the Highlander after both had been sitting in 90+ degree sunshine. I haven't tested the VLT of the roof, but I suspect it is on the order of 15%, or sunglasses level of light transmission. I.e very dark.

 

[Deleted member 19354]

I guess it depends on the temperature outside etc but I usually remotely open all the windows for a few

To add my ¢¢ I live in North Texas, so we get hot. I do have a glass top and do not have a shade on it. I tinted the front door windows to match the back. And then I have the windshield fold up sunscreen. All of those keep it cool-ish when parked in direct sun.

 

[DYohn]

Well, not quite.

Here in Australia, Brisbane summer, without a shade makes me a little ill & especially in realtion to sore eyes, not nice at all. With a sun shade, the problem completely goes away.

Aoskonology, matches headline, looks like factory; easy to fit and remove, not expensive. Regular use now: we take it out for the brilliant sunny winter weather here in Brisbane, back in for summer. Works very well & does exactly what is expected.

Yea here in the Arizona desert where the sun shines just as bright and the temperature gets just as hot as Brisbane, I don't need a shade on the roof.

I would like to come to Brisbane and join you for a XXXX Bitter, though.

 

[dhoerl]

I have read about window fans that just pull outside air into the car, anyone have experience with these? https://www.amazon.com/Turvysen-Exhaust-Amplifier-Ventilator-Radiator/dp/B0DZXNF4WK/

 

[Mach1E]

I have read about window fans that just pull outside air into the car, anyone have experience with these? https://www.amazon.com/Turvysen-Exhaust-Amplifier-Ventilator-Radiator/dp/B0DZXNF4WK/

If you read the reviews of these things, it sounds like they’re more for people who sleep in their cars.

https://www.amazon.com/dp/B0D6Y7ZTS...d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwp13NParams

I can’t see these being very effective at keeping your car cool in direct sunlight. A simple sunshade on the windshield would be less work and do more.

 

[Wayne-001]

To add my ¢¢ I live in North Texas, so we get hot. I do have a glass top and do not have a shade on it. I tinted the front door windows to match the back. And then I have the windshield fold up sunscreen. All of those keep it cool-ish when parked in direct sun.

As another N-Texan, I do the same. Note that both the roof and windshield windows let in regular sunlight (duh!) which gets absorbed and heats up the interior. The roof window is only partially transmissive, so that is why a shade for it wouldn't help as much. That glass does get hot to the touch, though, which adds to the heating effect. The dash under the windshield can absorb the most light and being fully visible-light transmissive, it makes sense to use the windshield reflective shade. Yeah, all cars get hot in Texas (and Arizona) sun, especially when it is 100F outside! Best to park in a shady spot, if possible.

 

[devmach-e]

As another N-Texan, I do the same. Note that both the roof and windshield windows let in regular sunlight (duh!) which gets absorbed and heats up the interior. The roof window is only partially transmissive, so that is why a shade for it wouldn't help as much. That glass does get hot to the touch, though, which adds to the heating effect. The dash under the windshield can absorb the most light and being fully visible-light transmissive, it makes sense to use the windshield reflective shade. Yeah, all cars get hot in Texas (and Arizona) sun, especially when it is 100F outside! Best to park in a shady spot, if possible.

I was only able to measure the side windows. But the front side windows block ~77% of infrared, ~60% of UV, and ~22% of visible light. But the rear side windows are 90%, 94%, and 78%, respectively. I imagine that the roof and back window have similar properties.

 

[Wayne-001]

I was only able to measure the side windows. But the front side windows block ~77% of infrared, ~60% of UV, and ~22% of visible light. But the rear side windows are 90%, 94%, and 78%, respectively. I imagine that the roof and back window have similar properties.

On the other MME forum, someone measured the spectral transmission of the front and roof window. Search for "UV Expsoure through the windows" (not my spelling mistake).
The roof has a transmission of about 5% in visible spectrum. Front window is about 65% of visible, both UV blocking. As I mentioned before, the roof window is not just reflective, it absorbs as well resulting in it heating up on a sunny day.

 

[macchiaz-o]

the roof window is not just reflective, it absorbs as well resulting in it heating up on a sunny day.

This is clearly true, I can confirm it's hot just by touching it. How does this compare with a metal roof, though, which is also absorbing heat?

 

[Mach1E]

This is clearly true, I can confirm it's hot just by touching it. How does this compare with a metal roof, though, which is also absorbing heat?

Never seen a comparison, but anyone at a dealership could just throw a thermometer in two Mach Es of the same color side by side with and without the roof and see.

All I know is my dark matter grey Mach E with the glass roof is a LOT cooler than my white Chevy SS sedan with ceramic tint was.

I would be surprised if it’s more than a couple degrees warmer with the glass roof vs steel.

Now winter is another thing altogether. Our “up north” friends complain about how cold the car is with the glass roof. Doesn’t keep heat in as well and it’s reflecting sun heat from the outside. The worst of both for winter.

Sponsored