Remote Start DIY Wiring Guide 2006-2010 Yaris

[adam1981]

Thanks for the guide in the OP... I successfully connected a remote start/alarm with the use of it. I have to do some more research for some of the alarm items though.

I do have one area of concern. When the Yaris is running under the control of the remote start unit, there is a buzzing sound coming from underneath the dash from what looks like a relay - but there is no label for it (I already looked in the manual too). It is the blue box on the bottom center of wiring harness panel where you connect the positive parking light.

The sound goes away after you put the key in, on, and press the brake.

Is this sound normal for this vehicle when using remote starts?

[CTScott]

Originally Posted by adam1981

Thanks for the guide in the OP... I successfully connected a remote start/alarm with the use of it. I have to do some more research for some of the alarm items though.

I do have one area of concern. When the Yaris is running under the control of the remote start unit, there is a buzzing sound coming from underneath the dash from what looks like a relay - but there is no label for it (I already looked in the manual too). It is the blue box on the bottom center of wiring harness panel where you connect the positive parking light.

The sound goes away after you put the key in, on, and press the brake.

Is this sound normal for this vehicle when using remote starts?

It sounds like the positive light feed is backfeeding the flasher relay. The Yaris is really a negative switched, not positive switched vehicle. I wired mine as a negative, but posted the positive option, as I noticed it documented on a keyless entry DIY. Looking at the EWD, wiring positive to 4A-29 will cause a backfeed. It will not hurt anything, but will produce that annoying buzz.

With your remote starter, can you select negative instead and wire to the negative wire instead? If not, you can use a standard automotive relay as an inverter:

[adam1981]

Originally Posted by CTScott

It sounds like the positive light feed is backfeeding the flasher relay. The Yaris is really a negative switched, not positive switched vehicle. I wired mine as a negative, but posted the positive option, as I noticed it documented on a keyless entry DIY. Looking at the EWD, wiring positive to 4A-29 will cause a backfeed. It will not hurt anything, but will produce that annoying buzz.

With your remote starter, can you select negative instead and wire to the negative wire instead? If not, you can use a standard automotive relay as an inverter:

I have two wires: 1) Parking Light Flasher Feed 2) Parking Light Flasher Output

I have 2 connected to the parking light switch wire under the column and 1 connected down there by that relay. The remote start manual says I can connect 1 to a standard 12V source for + switching and ground for - switching, so I guess I should put 1 to chasis.

Thanks for the clarification!

edit: Yeap, that worked. Thanks again for the clarification on the switching!

[CTScott]

Originally Posted by adam1981

I have two wires: 1) Parking Light Flasher Feed 2) Parking Light Flasher Output

I have 2 connected to the parking light switch wire under the column and 1 connected down there by that relay. The remote start manual says I can connect 1 to a standard 12V source for + switching, so I guess that is what I need to do.

Hang on - It sounds like you have both a positive and a negative hooked up. You can only do one or the other. What remote starter are you using?

[adam1981]

Originally Posted by CTScott

Hang on - It sounds like you have both a positive and a negative hooked up. You can only do one or the other. What remote starter are you using?

I realized my error and edited my post... :) Thanks for the help!

[CTScott]

Originally Posted by adam1981

I realized my error and edited my post... :) Thanks for the help!

Very good - The wording in the remote starter manuals can be mighty confusing.

For the additional alarm wires, post up what you need and I'll add all of them to the document.

[adam1981]

Originally Posted by CTScott

Very good - The wording in the remote starter manuals can be mighty confusing.

For the additional alarm wires, post up what you need and I'll add all of them to the document.

Right now from what I can remember this is what else I need :

Headlights (I have a low current neg headlight output)
Door Triggers and type (have pos and neg trigger wires)
Also have aux outputs for various things such as remote window roll up...would be great if I found where to tap the windows up.

Oh, I have a Prestige APS-997N...