95 Series Prado - Engine Immobilizer System Malfunction error code B2799

[SamSta Member Find all posts View Profile Close SamSta]

Symptoms:

• Engine turns but wont start
• Flashing immobilizer light remains on with key set to ON
• Repeat dtc code B2799
• Car starts intermittently with key turned on and off several times (in my case, won't be the case for some)

I've been battling this issue for the last week trying all kinds of wizardry suggested online. My solution was so damn obvious I'm kicking myself for not checking this first. I did think if it but then thought to myself "naa it wouldn't be that"...

Anyways, the cause for my B2799 issue was that I had accidentally and partially dislodged the plug that connects to the side of the ignition barrel when I was working behind the dash recently. It was still sitting in the socket making intermittent contact but not "clicked" in place.

So before you go replacing keys, transponders, ignition barrels etc etc, double check the obvious things first!

[SamSta Member Find all posts View Profile Close SamSta]

Here's a couple of pics of where the plug connects into the ignition barrel. Their is a small plastic surround that easily pops off with a bit of force. You might need to remove the lower panel under the steering wheel to get into it.