Searching hi and lo for this but too many misleading paths.... I've had some body work done on my 2001 SR5 (rear passenger 1/4), and now the keyless remote will not work, or program properly. There're no acknowledge beeps or anything. A keyless remote tech said he thinks the sensor might be in that rear 1/4 panel? Where can I check for this? What is the device called? Where is it wired? FYI I have two working key fobs since before the accident. Thanks

The module is in your rear door hatch. Toyota calls them a rear door but hatch eliminates the confusion. 1996 thru 2000 under the drivers seat.

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So of course I forgot to say that we replaced the rear hatch door also, along with that quarter panel. So either they didn't replace the module, or they left the used one in and it needs some sort of reprogramming or something? I think the shop may still have my damaged rear door in the junk pile. I spun in heavy weather and hit a concrete ledge backwards right across the D-pillar and tail light. I'll dig into the parts diagrams too for reference. Thanks!

I would swap your module. I sure hope they matched your chassis wiring with the replacement.


As the years are not compatible.

I suspect your original module will fix your issue provided the wiring matches the vehicle.

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It there any way to extend the reception? Mine loses communication at 10 feet and sometimes less...

IIRC, there is a wire that comes off the RS3000 box that is the antenna wire, however that might be for the 3200, I remember reading about an antenna of some kind while doing research on the security systems, but I can't remember for sure

since you have a 3200 (I presume as you have a 2000, I believe this will help: OEM Keyless entry extended range MOD | Tacoma World)

Minor correction - '99-'02 is in the rear door (hatch), not just '01/'02. '96-'98 is only part of the RS3000 alarm, dealer/port installed.

-Charlie

is the security system on the 99+ this orange box that is on the back hatch metal?

Not exactly. The back door ECU handles wireless reception from the OEM remote and rear door functions (window, wiper and their safety interlocks) and communicates to the body ECU via the multiplex communication bus. There is no 'security system' in that function.

Security functions are done by an (optional) RS3200 system that plugs in up front at/near the body ECU. The body ECU controls a number of 'body' functions like the keyless beeper (in the engine bay), door lock/unlock, auto headlight off, etc.

The Limiteds for '99+ (and maybe other trims optionally in later years?) also got a SEPARATE immobilizer system that works between the key cylinder and ECU.

-Charlie

That's good to know, I've been trying to research these systems, but there's so little information on them that I can't find enough to get started.

As far as I know from my research if I'm not mistaken there are one of two systems that could have been installed, one with lock/unlock and rear window roll down (which I was led to think is part of the body ecu from what I have read) and another that just locks and unlocks (which I believe is the base RS3200). I've been trying to figure out what does what exactly in that regard so I can begin working backwards to add in the rear window function system to my 98.

I guess I need to just try and find a security system in a junkyard from one of these and get to work with a multimeter to figure out what functions do what. The only hurdle I've been stuck on is how to tell which system a vehicle has, if it was equipped with one.

Worst case scenario, I can use the RS3000 remote with its strange dual-system buttons between two separate RS3000 systems in my 4runner, one system can be the OEM security, tied to one button on the remote, and I can make the other button roll down and up the window with a separate system.

Time will tell, I really just need to find a few security boxes to tinker with at a junkyard.

Good catch.. Thank you Charlie. I didn't think it went back to 99..:-) So it matches the fat lip and the headlight change..

The wiring is added in on the 96 to 98 with the box under the seat and a relay bar. It's actually quite messy. I pulled apart a 97 limited and the wiring was a mess from the added in box. :/

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OP here. I'm going to see if I can recover the rear hatch wiring from the damaged door (if they still have it in the junk pile) of my 2001 SR5. I'm not sure of the year on the door we installed but I may be able to find out from the body shop buyer, or maybe a S/N or something. All this sounds daunting to sort out!!

Bought used T4R without key fob, how do you get replacement?

Ive used these guys a couple times, the parts seem good quality (the claim OEM parts) and very reasonably priced, and they have programming instructions on their site. Theres also youtubes describing how to program them. Its pretty simple.

Replacement Key Fobs From Keyless Entry Remote Inc - Shop and Order Online