2005 corolla, remote starter
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=108141
Printed Date: May 02, 2024 at 7:09 PM
Topic: 2005 corolla, remote starter
Posted By: rfwave
Subject: 2005 corolla, remote starter
Date Posted: October 13, 2008 at 11:43 PM
for install a remote starter in this car , do i need a relay for the disarms with keysense wire ? , is it ok to connect the disarm wire from the rs directly to keysense wire of vehicle ? thanks in advance . -------------
Replies:
Posted By: Mike M2
Date Posted: October 14, 2008 at 6:26 AM
You don't need a keysense at all in this car. The 05 Corolla has an immobilizer key but no alarm from the factory so there is nothing to disarm.
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Mike M2
Tech Manager
CS Dealer Services
Posted By: KarTuneMan
Date Posted: October 14, 2008 at 7:23 AM
I vote for YES you will need the keysence....depending on the bypass you use. And the alarm.... just like was posted here on the volt, a Camery doesn't have an alarm (LE model) My folks have one. On the Corolla arm and disarm are controlled with lock and unlock.... if it has security. -------------
Posted By: howie ll
Date Posted: October 14, 2008 at 11:58 AM
What ever disarmed with keysense?
Posted By: rfwave
Date Posted: October 14, 2008 at 12:25 PM
Thanks . i'm still confused ? -------------
Posted By: Chris Luongo
Date Posted: October 14, 2008 at 5:08 PM
The diagrams you read are probably written by people just sitting around with a computer and a Toyota shop manual.
I get the feeling they've never bothered to take a look at the actual car, or do any real research.
1. The car's keysense wire is low current. Even if you do choose to trigger it with a ground-when-running output from your remote starter, no relay is required.
2. Keysense generally isn't necessary. The (US) Corolla has never had a factory alarm.
3. You mentioned connecting your factory disarm output to the car's keysense wire. Your factory disarm output (generally) only makes a one-second pulse, and this wouldn't disarm the alarm even if you had one.
You would instead use an output that makes a ground the whole time the remote starter is switched on. (Usually referred to as ground when running, GWR, or negative ignition output.)
4. On the rare chance your Corolla has the extra-cost, dealer-installed Toyota VIP alarm system, yes, triggering keysense during remote start should disarm it.
5. What are you doing to interface with your car's anti-theft immobilizer key?
If you're using a standard spare-key-in-a-box bypass, you don't have to worry about keysense.
If you're using a no-key-required bypass (best one is KEY-OVERRIDE-SL2 from Fortin), it's necessary to connect the bypass module to the car's keysense wire, for programming purposes.
Posted By: howie ll
Date Posted: October 14, 2008 at 5:41 PM
Thank you Chris for a very clear and concise reply. You've cleared up a keysense issue for me as well since we never seem to come across keysense here. Sorry never seem to do anything ith Toyotas over here, the Corolla is called an Aygo and they al have factory alarms usually made by Fujitsu.
Posted By: Mike M2
Date Posted: October 14, 2008 at 6:18 PM
Indeed, well written! I have caught my guys doing just what Chris describes in #3. They give a pulse before start to the keysense on a Toyota with factory alarm and it does nothing. Easy thought is if the key is in the igntion it gives a ground to keysense the entire time it is there, so your connection from your RS will need to do the same. Also, a lot of guys think that just because there is a light on the dash that states "security" it must have an alarm. We know that's just not so and the Corolla is one. Kartune, we would never doubt your word, but I have never seen a LE with alarm(even the Toyota website states this). Are you sure it's not VIP? They are dealer installed Toyota branded alarms and look factory.... ------------- Mike M2
Tech Manager
CS Dealer Services
Posted By: enice
Date Posted: October 14, 2008 at 6:27 PM
One thing that I have learned about the bypass modules. They of course need to be connected to the key sense also but at the same time the key sense is being triggered by the bypass module everytime you remote start. The old 555x does it as well as the Fortin and idatalink modules. The XK05 doesnt need the key sense since it is programmed through the ECM with the IMI and IMO wires. Hence, when installing a remote start with the modules where the connections are being made at the cylinder the vehicles factory alarm(if it has one) will disarm automatically. No need to run another wire disarm the alarm.
Posted By: Mike M2
Date Posted: October 15, 2008 at 6:23 AM
This is true with some bypass's and some cars, but not all. Key in a box of coarse won't disarm anything(tho Nissan's and Chrysler do by just seeing ignition and sentry key), and a lot of bpasses that are just bypass only(no other features like locks or door triggers, like Flashlogic FLTB1 which does require a keysense wire to operate yet doesn't disarm). Every application is different....
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Mike M2
Tech Manager
CS Dealer Services
Posted By: kgerry
Date Posted: October 15, 2008 at 10:05 AM
when using a data module i put a diode inline on the factory keysense wire... then i send my GWR to the anode side and the keysense wire from the bypass module to the cathode side... everything works as it should.... GWR shuts down the OEM alarm yet the data module doesnt see this... it only sees a ground when the key is actually slid into the ignition... ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: chriswallace187
Date Posted: October 16, 2008 at 3:39 PM
I would say as far as the original question - you only need a relay with a particularly weak GWR output when the car has both an alarm that disarms with keysense, and an immobilizer.
I agree with the other posters as far as the keysense drawing basically no current on Toyotas, but I could see it as a possibility if the remote start has to split the GWR between that and the bypass module. I once did an add-on remote start with a bypass and aftermarket alarm(all DEI product). In that case the alarm also needed the GWR to activate its sensor shunt, and the remote start couldn't do that and the bypass consistently.
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C Renner's Auto Electronix
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