Smart Key Not found - Solution

Keyless Vehicle Module

Currently going through this right now.
Replaced both batteries in the key fob and removed fuse #17 for a minute with no luck. Heading back down to unhook the battery, fingers crossed this works!

I did notice some water in the passenger footwell that I have not seen before, wondering if this might be causing something like others have found. I can't open the sunroof to check the drains for clogs because I can't start the car. I did look at the fabric along the pillar and it's dry and the fuse area of the glove box is completly dry with some dust so that leads me to believe that there is no water intrusion there. Radio works, lights work...

spawnywhippet said:

None of these methods fixed my issue, which turned out to be a bad KVM. It cost me $2300 for the KVM and 2 new keys.

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If this doesn't work and I need another KVM, is this something I can buy used from a donor or do I need to drop $2,300 for a new one?

Disconnecting the positive terminal on the battery didn't work
Calling the indy now...

Same issue, and (so far) the battery reset worked for me. Thanks Google, and you .

MY IID tool gave me this error btw, for future searches. U0214-00 (2F) Lost communication with the remote function actuation

Just had this same issue. Thought I needed a new key fob. Dealer quote = $800. Outrageous. Disconnected the positive terminal on battery and the reconnected. Problem solved! Thanks!!!!!!

My problem is related: dash shows "No smart key detected", but when I briefly exit and re-enter the vehicle, the key fob is recognized and I can start the vehicle no problem - happens most of the time.

Based on that, don't think it's a battery connection or fuse issue - possibly key fob battery, but that's fresh, so ... any other suggestions?

I’ve had issues when the keyfob is in the same pocket with my phone. The phone has RF signals that can interfere with the keyfob/car antenna. Not sure if that might be your issue here, or if you have some other device operating in RF in your car.

Other things that come to mind: water in the passenger footwell anytime in the past six months, check health of the car battery. Otherwise, you might be having an issue with the keyless vehicle module or one of the RF antennas. Check for any DTC codes. I believe the keyless module is in the right hand cargo bay someplace, and I think the RF antenna’s are in the headliner - maybe someone else knows for sure.

Just because it doesn’t happen every time doesn’t necessarily mean it’s not a connection issue (it would rule out a fuse, but maybe not a relay, and certainly wouldn’t rule out a corroded connection someplace).

Sylvain said:

Today As I tried to start my 2010 LR4 HSE, I get a "Smart Key Not Found" code popping up on the dash. I couldn't start the car, couldn't lock the doors, so it seems like the smart key could not be detected by the LR4 sensors at all. After some research online, I found a blog of an Australian Land Rover owner that had the same problem. Based on the blog content, I was able to come up with a solution. I ended up disconnecting the positive pole of the car battery for 120 secs and reconnect it. The sensors were then able to recognize the Smart Key and everything went back to normal. Another possible fix was to temporary remove the Fuse #17 from the fuse panel located next to the battery on the LR4. This prevented towing the vehicle to the dealership and keep the car for 3 days, and charge you $400.
Hope this helps someone someday.

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OP,

Thank you for posting this, just helped sort my 2012. Same issue.

Hey all, having some trouble.

Today in a parking lot I wanted to plug my IID tool in to get some temperature readings since it was hot today. Some of the pins in my OBD-II port are a bit janky so sometimes when I plug it in it’ll say N/A on live values so I’ll have to unplug it and re plug it firmly. Additionally sometimes when I plug it in the stability control light will come on and I’ll have to do a quick off and on cycle to get rid of it (never been an issue) Well upon doing that iginition cycle my car started saying smart key not found and now I have that trouble code. I can get the car started by holding the key under the wheel and trying to turn the car on a couple of times, but I can lock or unlock it.

Did I mess something up by plugging in the IID tool or does this seem like a coincidence? I tried pulling the fuses and the positive pole on the battery, nothing has worked. What should I do now?

The OBD2 port isn't a hot pluggable bus, I would expect errors and possible damage if there was a surge. You could try unplugging the negative cable on the starter battery for a while if you haven't done that already?