Rear screen demister problem
11-18-2005 | 09:29 AM
#1
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Rear screen demister problem
Has anyone else had a problem with demisting the rear screen? There are areas of the rear screen that do not demist but appear to have screen heater 'wires'. I am aware that the radio antenna is also part of the rear screen. Have I mistaken the antenna wires for the heater wires? It seems strange to me that the whole screen can't be cleared of mist.
11-18-2005 | 10:34 AM
#5
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From: Edmonton
The antenna built into the rear hatch glass is more complex than you may think. There is also a ground that surrounds the heater wires (to keep noise out of the antenna). There is an additional wire that isn't connected to anything. I think that is a capacitive "choke".
Anyway, same thing applied to the previous 3rd gen RX-7. It seems to be ubiquitous technology used in many vehicles.
Anyway, same thing applied to the previous 3rd gen RX-7. It seems to be ubiquitous technology used in many vehicles.
11-18-2005 | 02:31 PM
#7
Klingon Grammarian
Joined: Aug 2005
Posts: 1,204
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From: Bellevue, WA
When I took my 8 in for first service, I pointed out that exact problem to them. They explained that those wires on the top and bottom that don't defog... aren't supposed to. They're the radio antenna.
11-19-2005 | 12:53 AM
#13
Turning and burning
Joined: Nov 2005
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From: Half a parsec from Kessel...
Demisting? Isn't it called a 'defogger' or a 'defroster'?
Cabin fog is a huge problem when it's cold outside and you start breathing inside as well. Two solutions: 1) warm up the interior with dry air; 2) stop breathing.
Or you can fire up the rear defroster.
Cabin fog is a huge problem when it's cold outside and you start breathing inside as well. Two solutions: 1) warm up the interior with dry air; 2) stop breathing.
Or you can fire up the rear defroster.
11-19-2005 | 01:07 AM
#14
I am Goober Wafflelips
Joined: May 2005
Posts: 398
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From: Ottawa, Ontario, Canada
Originally Posted by YT1300
Demisting? Isn't it called a 'defogger' or a 'defroster'?
Cabin fog is a huge problem when it's cold outside and you start breathing inside as well. Two solutions: 1) warm up the interior with dry air; 2) stop breathing.
Or you can fire up the rear defroster.
Cabin fog is a huge problem when it's cold outside and you start breathing inside as well. Two solutions: 1) warm up the interior with dry air; 2) stop breathing.
Or you can fire up the rear defroster.
giving the AC a quick run works REALLY well usually too
11-19-2005 | 04:05 AM
#15
Turning and burning
Joined: Nov 2005
Posts: 569
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From: Half a parsec from Kessel...
The AC normally kicks on when you've selected the front defroster; it's actually a bit of a misnomer in the winter, since it's using the condenser coil to dry out the air.
11-30-2005 | 04:39 PM
#17
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From: Edmonton
If you have moisture buildup problems there are two very effective things you can do.
1. Make sure the system isn't on recirc.
2. Use the front defrost function as indicated above - it uses the A/C condenser to dry out the air.
If you still have problems, check the passenger floor area for moisture. Sometimes the A/C drain hose can become detatched and dribble onto the passenger floor.
Be aware that if you have more than one passenger, misting problems can be common in winter. You need to use the front defrost function and fairly high fan speed.
1. Make sure the system isn't on recirc.
2. Use the front defrost function as indicated above - it uses the A/C condenser to dry out the air.
If you still have problems, check the passenger floor area for moisture. Sometimes the A/C drain hose can become detatched and dribble onto the passenger floor.
Be aware that if you have more than one passenger, misting problems can be common in winter. You need to use the front defrost function and fairly high fan speed.
12-01-2005 | 08:20 AM
#18
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Posts: 3,319
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From: NYC
Originally Posted by YT1300
The AC normally kicks on when you've selected the front defroster; it's actually a bit of a misnomer in the winter, since it's using the condenser coil to dry out the air.
12-01-2005 | 09:39 AM
#19
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Posts: n/a
Originally Posted by Mugatu
i had no idea what the heck a 'demister' was until i read this thread.
Back on topic - I tried some of the Rain-X Interior Anti-Fog. It didn't seem to help much - I still *must* use the defogger (with condensor) and use fresh-air intake. I would prefer vents only and recirculate (especially when there's school bus or diesel truck ahead) but when I switch to vents and recirculate the windows fog up to the point of unsafe in a minute.
Anyone else have more luck with an interior anti-fog product? Are there any that aren't simply snake-oil?
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