mrevilandy
New member
Just like the title says is this mod possible? Be nice to auto start and have all defroster on as well vs going out there to turn it on lol.
Auto defroster with auto start possible?
- Thread starter mrevilandy
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rigtec
New member
Hi mrevilandy,
By "auto start", you're referring to a 'Remote start' luxury option...(?) The 'Automatic Temperature Control' 'Can Not' be programmed to operate on a schedule i.e., ...START HEATING @MORNING WARM-UP 72 DEG FAHRENHEIT>INCLUDE DEFROST WINDSH..., or to bring itself on lol! We must remember that: whatever the A.T.C. was set to maintain at the time the vehicle was last used/shut off, it will resume to maintain 'Exactly That' once the engine is restarted. So try to remember to adjust it to the anticipated setpoint (target) before shutting the vehicle off,
Rgds!
mrevilandy
New member
Hi thanks for the reply! I knew the climate control would start where it was left off but was hoping for the rear defroster button to remain on the same way too. Maybe that's too much to ask for lol
mrevilandy
New member
Ok so it's more of an aftermarket alarm system rather than something we can manipulate with oem.
flyinhawaiian01
New member
Not necesarily, actually.
It depends on just how much you wanna spend on having this option! Find a high-end car audio/alarm shop in your area and see if they have a defrost addon kit they can build into your stock alarm system.
I have an idea on how you could do it without a kit, but it would be a TON of wiring and relays and a timer. Having to tie into the stock wiring system would be the hardest part, as you would need to have a manual switch in the vehicle to validate the rear defrost, then take a couple of relays and diodes to tie into the stock alarm's output trigger (a remote start light in the dash would work too), and either a tach or ignition sense trigger to complete the "smart" circuit.
All of the inputs would then allow the trigger to a relay that operates the defrost circuit in the vehicle.
During cold months, you'd leave the switch on and whenever you remote start the vehicle, it would activate the defrost circuit once the vehicle starts. You'd turn the switch off in warmer months and leave it off until the next fall/winter season.
If you wanted to get really fancy, you could even tie into the system a thermistor and remove the manual switch completely, this way the thermistor would sense the temp (you'd have to add on a thermal adjusting trigger system, pretty easy to do and some are available already built and ready to install in a 12VDC application) inside or outside the vehicle, depending on where you mount the thermistor, and trigger the circuit depending on what temp you have it set at.
Honestly though, it would probably be cheaper and possibly easier to just disable the stock starter system and install a full aftermarket remote start alarm system like SimonSay's system above.
It depends on just how much you wanna spend on having this option! Find a high-end car audio/alarm shop in your area and see if they have a defrost addon kit they can build into your stock alarm system.
I have an idea on how you could do it without a kit, but it would be a TON of wiring and relays and a timer. Having to tie into the stock wiring system would be the hardest part, as you would need to have a manual switch in the vehicle to validate the rear defrost, then take a couple of relays and diodes to tie into the stock alarm's output trigger (a remote start light in the dash would work too), and either a tach or ignition sense trigger to complete the "smart" circuit.
All of the inputs would then allow the trigger to a relay that operates the defrost circuit in the vehicle.
During cold months, you'd leave the switch on and whenever you remote start the vehicle, it would activate the defrost circuit once the vehicle starts. You'd turn the switch off in warmer months and leave it off until the next fall/winter season.
If you wanted to get really fancy, you could even tie into the system a thermistor and remove the manual switch completely, this way the thermistor would sense the temp (you'd have to add on a thermal adjusting trigger system, pretty easy to do and some are available already built and ready to install in a 12VDC application) inside or outside the vehicle, depending on where you mount the thermistor, and trigger the circuit depending on what temp you have it set at.
Honestly though, it would probably be cheaper and possibly easier to just disable the stock starter system and install a full aftermarket remote start alarm system like SimonSay's system above.
rigtec
New member
Hi Mr. Evil Andy (lol),
I think I could rig up something by using a micro-proccessor like this one; "but we'll see":
It's cost is about $5 bucks... here's a link to it's description: W1209 12V 50 110°C Digital Thermostat Temperature Control Switch Sensor Module | eBay If you would be interested in using a processor like this to 'Over-ride' the oem rear window defroster switch, I think I can draw up a wiring scheme to integrate 'seamlessly' with our oem rear defroster dash switch; processor decides when defroster needs to be on or off automatically based on the outdoor ambient temp... there are plenty of processors around to choose from; we'll just have to pick one that matches all of our particular application parameters! ...I'll be back once I've had time to read up on these processor electrical system Nomenclature specs, and the O.E.M Defroster wiring (input/output/build-platform),
Rgds!
Danimal
New member
....just got it, so I'm not sure how everything works yet...
Must be really new; you haven't even peeled the protective plastic off of the remote! :bluejump:
Dan
