Can the rear defrost in a 2009 Impala be set to stay in the on position so it will activate automatically when the vehicle is started?

hhdomains
0

Asked by Nov 29, 2012 at 12:33 PM about the 2009 Chevrolet Impala LT

Question type: Maintenance & Repair

I had a remote starter installed but it would be far more useful if the rear defrost would also activate
when the vehicle is started.

6 Answers

Yes it's possible but would be a custom electrical job for a professional. They use a great deal of amperage and that's why they shut themselves off when the engine is not running , the battery would go dead very quickly

2 out of 2 people think this is helpful.
hhdomains
0

Thank you for the response. Would this require an additional interface for a remote car starter that could be added post installation?

Ya got me on that one. Maybe somebody will know

John Saffrahn
28,945

Yes it could be added. It would be wired into the ignition power wire coming out of the remote start using a diode and a relay. You hit the remote start, the car starts, there will be an ignition wire that stays hot and once the remote start timer runs out the power will be removed from that wire. That wire will have to be cut and a diode put in so electricity can't back feed to the remote start box and then splice the relay in between the diode and the remote start box. Without the diode the rear defrosters will be stuck on every time you turn the key on because power will back feed into the remote start wire and trigger the relay. Like david said, yes and also like david said, have a pro do it. If someone says its not possible print this page out and take it to them. Anyone who is well versed in electrical will completely understand what I have written and be fully capable of carrying it out.

1 out of 1 people think this is helpful.
hhdomains
0

Thank you John. Don't worry, these are not things I even attempt. When it comes to vehicles I always go to someone who knows what they are doing. Just trying to narrow down the possibilities. One more question. The starter I have has different options for each button. For instance if you push the button and release it one event will occur but if you press and hold another event will occur. Would one of these buttons work for both starting the vehicle and activating the defrost?

John Saffrahn
28,945

Its quite possible but I'm not certain as to how yours is setup. Some are set up so you can add features like opening an electronic trunk release. If you were to figure out which wire on the box became active with that button, yes you could but it would have to stay "hot". If you tap into one that is similar to the trunk release wire then the rear defrosters would turn on for only a few seconds. If you know the make and model of your alarm you should easily be able to find all the info you need online regarding features. Let's say one of those button combinations turned on headlights, doubtful but just an example, the wire that feeds power for that would be perfect. Getting back to the other set up after thinking about it you could just tap directly into the defroster relay that is already there as long as you put a diode into the wire going to the defroster relay. If only you would have gotten the 09 with the factory installed remote start.

Your Answer

Add photo

Related Questions

  • Why wont the Gear shift lever button on 2006 chevy impala engage to move out of park? 39 answers

    My gear wont release out of park. first time it did it i pushed the brake down to the floor and it relased now it wont release at all. it starts up fine my steering wheel releases just not my shifter.

    2006 Chevrolet Impala

    -

    Maintenance & Repair

  • 2009 Chevy Impala will only blow cold air 1 answer

    Was working fine earlier this fall but now it will only blow cold air. Blower/fan is pushing good volume of air but it will not heat up. At times it seems like it is starting to warm up but then blo...

    Chevrolet Impala

    -

    Maintenance & Repair

  • What would make a 2009 chevy impala run hot? 3 answers

    It happened on a morning where it was 9 degrees outside. The defroster never blew out hot air, it was all cold and once the car started moving the temp hand went past the halfway mark. Looked under ...

    2009 Chevrolet Impala LS

    -

    Maintenance & Repair

  • 2005 Impala ABS and traction control light comes on. . 9 answers

    It sounds like something is slipping in the front end when taking off or turning while going slow. Everything is fine at higher speeds. The traction light goes out but the ABS light stays on.Replaced ...

    2005 Chevrolet Impala LS

    -

    Maintenance & Repair

  • 2008 Impala LS Homemade Dual Exhaust? 40 answers

    So I was thinking about rigging up my own dual exhaust. Just cutting off the exhaust where the headers meet and then using a Y pipe to break the exhaust off to each side with a muffler on each side. ...

    2008 Chevrolet Impala LS

    -

    Car Customization

Impala

Looking for a Used Impala in your area?

CarGurus has 31,518 nationwide Impala listings starting at $1,000.

ZIP:

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,430
#2 FordNut
FordNut
Reputation 1,320
#3 Tom Demyan
Tom Demyan
Reputation 1,270
View All

Related Models For Sale

Used Chevrolet Malibu"
963 Great Deals out of 56,105 listings starting at $1,995
Used Dodge Charger"
537 Great Deals out of 32,449 listings starting at $1,800
Used Chevrolet Camaro"
501 Great Deals out of 33,157 listings starting at $3,500
Used Honda Accord"
1,185 Great Deals out of 73,302 listings starting at $500
Used Nissan Maxima"
361 Great Deals out of 23,169 listings starting at $2,695
Used Nissan Altima"
1,615 Great Deals out of 80,400 listings starting at $500
Used Toyota Camry"
1,574 Great Deals out of 89,535 listings starting at $600
Used Dodge Challenger"
287 Great Deals out of 22,154 listings starting at $7,995
Used Chrysler 300"
493 Great Deals out of 22,485 listings starting at $2,490
Used Ford Mustang"
634 Great Deals out of 45,666 listings starting at $1,550
Used Chevrolet Tahoe"
733 Great Deals out of 34,219 listings starting at $1,800
Used Chevrolet Silverado 1500"
1,871 Great Deals out of 120,447 listings starting at $1,500
Used Ford Fusion"
1,260 Great Deals out of 78,066 listings starting at $1,550

Used Cars For Sale

2017 Chevrolet Impala LT For Sale
960 listings starting at $27,312
2016 Chevrolet Impala LT For Sale
664 listings starting at $17,999
2015 Chevrolet Impala LT For Sale
10 Great Deals out of 802 listings starting at $15,992
2014 Chevrolet Impala LT For Sale
379 listings starting at $14,990
2013 Chevrolet Impala LT For Sale
113 listings starting at $7,295