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Buick parkave 1999 rear defroster not working

The switch lights up so it's got to the three parts fuse,relay,modual rear window grid looks fine how do you go about removeing rear side panel without breaking any pins of panel.

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  • Cars & Trucks Master
  • 887 Answers

Ther is a break in the window grid. take a closer look

Posted on Nov 22, 2013

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Posted on Jan 02, 2017

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dgjtex
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SOURCE: location of fuses and relays for the rear window defroster

two locations, one under dash and one under hood. without your manual, thats about all I can help you with

Posted on Dec 18, 2008

michigan man
  • 3533 Answers

SOURCE: Rear window defroster

you need to make sure the wires are on the glass on each side and there is no broken wires in the glass there is a repair kit at a auto store to fix if you have a volt meter test it and that way you can find the problem look for breaks in the wire in the glass and do not for get the wires on each side of the glass.

Posted on Feb 12, 2009

  • 2 Answers

SOURCE: 2004 Impala rear window defroster not working

the 30 amp breaker is behind the fuses ....u have to take the glovecompartment out and pull the whole fusebox out if ur hands r too big ....the power seat circuit breaker is there 2
nab

Posted on Jan 07, 2010

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3 Answers

How come on my 2005 pontiac aztek if i take out the rear defroster fuse (#21) the light still lights up on my dash and the relay still clicks?? Help why did this rear defroster stop working?!?


I found this. Your heated mirror also works off that relay. You can do ohms test on the grid, if the grid is open, no continuity. The auto store should sell a product to paint over the open spot to restore continuity, if you can find the open spot.
Not trying to cause trouble, just killing time. Have a good day.
come-2005-pontiac-aztek-out-rear-ed5fvbjuyfmssjamkecfw2ck-4-0.jpg

Oct 24, 2016 | Pontiac Cars & Trucks

1 Answer

My rear defroster won't work I have a 2000 Buick Park Avenue


Could be a bad relay !
The rear defogger circuit is protected by a 40A fuse. Voltage is supplied through the fuse to the rear defogger relay. When you press the rear defogger switch, the heater and A/C programmer sends a class 2 message to the body control module (BCM), to ground the rear defogger relay coil output circuit. This in turn closes the relay contacts allowing current to the rear window grid.
Do you know what a class 2 message is ? What a BCM is ?
HTD BK relay in rear fuse box ,location In the center right rear of the passenger compartment, under the rear seat cushion
Watch this video on testing from relay base ( where it plug's into )
Do
VEHICLE RELAYS Testing from the relay base

Oct 05, 2016 | 2000 Buick Park Avenue

1 Answer

2004. Why doesn't rear defroster work?


The rear defroster fuse may have opened but failure of the switch, the connection to the rear defroster grid, or the grid itself could be the cause.

Nov 07, 2015 | Honda Accord Cars & Trucks

1 Answer

Rear defroster


none, if it lights up then power is going to the defroster. the problem is that you have a small tear in the defroster grid

Nov 21, 2013 | 1999 Buick Park Avenue

1 Answer

Hello 2006 Kia Rear defroster does ot work. I checked and changed the fuse but the fuse looked ok. Any help as to where to look for the problem would be appreciated. Thankyou, larry


It could be a bad rear defroster control switch or relay, it could be a loose or damaged connector somewhere in the defroster circuit, or it could be a damaged or defective defroster grid on your rear window. The easiest way to check to see if you have a circuit problem or a grid problem is to check for voltage at the connectors to the defroster grid at the rear window area. These connectors may even be located inside the trunk just below the rear window. If there is power there, then the circuits are OK and the rear window will most likely have to be replaced to fix it. If there is no power there, then the circuits must be traced to locate the cause of the failure...Most likely a burned-up switch and/or connector.

Jan 22, 2011 | Kia Sportage Cars & Trucks

2 Answers

REAR DEFROSTER NOT WORKING 2000 BUICK PARK AVE


Hello,

First I would look for a blown fuse, do you have an indicator lamp that turns on when you push it? Dose the light come on? If not a fuse or relay will most likely be the problem.

If the rear "grid" on the defroster only works in some areas then you have a broken link, the grid needs to be connected for it to work.

Check your fuses & or relays, check your grid for broken links, you can buy a repair kit for the grid at most auto part stores.

Hope this helps.

Dec 29, 2010 | 2000 Buick Park Avenue

1 Answer

Rear window defroster does not work the fuse and relay are new


YOUR SWITCH IS BAD OR THE GRID IN BACK WINDOW HAS A BROKEN PLACE IN IT.YOU CAN GO TO ANY AUTO PARTS STORES LIKE AUTO ZONE OR ADVANCE AUTO TO BUY THE REPAIR KIT.

Jan 19, 2010 | 1999 Oldsmobile Alero

2 Answers

Rear window defogger light lights when switch is pushed but no defogging happening!!! need wire diagram to trouble shoot. can u find any? checked fuses, all good. power seems to be lost after switch. ...


Yes there is a relay, but it is part of the hvac control head. There are two fuses in the system one is labled the hvac fuse it's a 10amp and there is a RR defog 30amp fuse. Those supply power to the hvac control head. Control head supplys power to the rear defroster. There should be a purple wire in c3 terminal D on the back of the control head. See if that has power when you turn on the switch. If it dose not then there is not power out put to the rear defroster. If so then the problem lies further down the line.
Good luck

Oct 17, 2009 | 2002 Chevrolet Cavalier Coupe

2 Answers

Need wiring diagram for rear defroster.


The common problem with the rear defrost not working on a park ave is the antenna integration modules on the rear c-pillars. This is the way they make the rear defrost and antenna part of the same grid on the rear window. If your external mirrors are heating up, the rear window is getting juice too. They are fed from the same circuit. And yes, the relay does go in a particular way. Compare it to the position of the others nearby and insert with the same orientation.

Sep 15, 2009 | 2000 Buick Park Avenue

1 Answer

Rear defrost on 1999 buicl park ave


Jeff, If you have already checked the fuses, check the wires attached to the defroster Grid. You may be able to see them inside the rear window. Make sure they are still connected. You might also want to check in the trunk the wires may run into it, and might have peen pulled apart when you put somthing in the trunk. As a last resort take a continuity tester and check the grid itself to make sure it hasn't failed altogether. Un plug the wires b-4 you test it to avoid a false reading.

Apr 01, 2009 | 1999 Buick Park Avenue

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