Smart Key Problems

So, just to clarify, neither the keyless nor the remote lock/unlock works on the remote you have?

Does the car start if you put the key in the slot?

Does the keyless lock/unlock work on the passenger side and/or rear hatch? If it does, then I would check the antenna in the driver's door, the connections and wiring.

If it not working from any door, it is likely the previous owner did something whacky to get a working key.

It maybe that you need to get the dealer to reset and reseed the ECU and then add your existing key. If that won't work, you will need to buy a new SKS key and add that. Once you have a completely working key, you can buy another key from an online Toyota dealer and add it yourself with Techstream or the "Chicken Dance", if that would be cheaper than buying two keys from the dealer and having her add it.

Hope that helps.

 

start with a volt meter and test both new batteries, although, i suspect there's something wrong with an ecu

 

Well that is very peculiar, and I can't recall similar symptoms reported previously her on PC.

When you say, "all functions of the remote stop working except for starting," does that after the 30 seconds, you tried to lock/unlock the car from the passenger side and the answer to the question below is no?

You haven't mentioned any lights on the dash, so I'll assume there aren't any, but if you have access to a scanner, it might pay to check for codes, anyway. Not all immobiliser codes cause a dash light, e. g. B2795. You get this code if you try and start the car using a fob for another car. While the Transponder key ECU sets a code, there are no dash lights.

Without something more concrete to work with, I not sure much more help can be offered.

Let us know how you get on and if you finally work it out.

 

What’s the 12 volt read at the front jump point not at the battery at the jump point under the hood in the black plastic fuse box?

 

any after market products installed on her?

 

I'm just going to post this fix here since my issue was very similar to Gen II Prius Smart Key doesn't work issues posted elsewhere on this site. I was getting the flashing red light and no smart key functions would work. I would have to insert SK in the dash to start the car and use the metal key on drivers side to unlock and lock the car. After a few weeks, I noticed the light had stopped coming on as well and still it did not function.

The fix was as follows and I've used this to fix many electronic devices that were formerly considered DOA. What I did was I peeled the front button seal off (since I was planning to replace the $10 outer case if the fix I was planning worked). I then inspected the electronics which seemed to have dirt due to the broken button seal at the top where the "lock" button is. I then got my CRC brand silicone spray and flushed out the case with this. I then blew it dry with compressed air and repeated the procedure with silicone spray and then compressed air. After a final wipe down with a paper towel, I inserted a known good battery and it worked immediately. I suspect the exposure to dirt and possibly even moisture had probably bridged some of the tiny IC connections from the outside on the circuit board and this cleaning procedure fixed it. You could probably use a circuit board cleaner if you want to be really safe and this would probably work as well.

If you try this I seriously recommend the low VCOF CRC brand silicone spray as it has very little caustic solvents which could interfere with the beneficial effects of the silicone itself.

 

Thanks for the sage advice.