A coil pack went out on my wifes Rav4 a couple weeks back and when I swapped it (with an OE Denso, I try to baby the Rav) the retaining clip on the plug broke off. Apparently it's a common problem.
Fortunately Toyota puts the part number on all of their plugs.
It's kind of funny that they put the number onto the part that breaks off. All the plugs have the same first 5 digits in the part number so add 90980 to that and you get this.
Again OEM Toyota for the wife. The local dealer wanted something stupid like $20 each, from Amayama they were $4. Zip ties are fine for my junk but not on here.
Pop that white tab up (again Toyota being Toyota the multi-piece plugs always have multiple colours of plastic so it's obvious) and then it can be de-pined.
Or because the black plastic is so brittle, just rip it right off.
Pop the pin out.
And into the new plug. One at a time cause I'm dumb and I'll forget the order if I do them all together.
For the last pin the retaining clip broke off and was jammed against the tab on the pin, so I just busted apart the whole thing with pliers to get it free. These must have been made with a defective batch of plastic or something because even my stuff that's 15+ years older isn't that brittle.
Push that white centre piece down to lock them all in and plug it into the coil.
And done. I've got one spare coil pack on hand and 3 more connectors in case the others give me a problem (apparently the 2 brown ones aren't as fragile). Weirdly the coil looked completely fine but on very cold starts sometimes it would stop working for some reason and throw a code so I'm not sure what went wrong with it.