Backup Switch Issue, Manual Transmission

sggaz

New member
Greetings. Amongst a few things that have come up in the first month or two of purchasing a 2000 Highlander 5 Spd 4WD we recently realized our reverse/backup lights weren't working. We always back into the driveway and know that they did work before.

Crawled under and found a damaged switch (pic taken after pulling connections apart):
8236359909_11fe9d6e77.jpg


As most will appreciate there's quite a bit of connector plastic missing on both sides. We reconnected and, when sitting just right, the reverse lights worked. Didn't have time to get out to buy replacement parts for a couple days and during that time the lights completely stopped working so we did a short circuit test like below and the harness proved good:
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Bought a replacement switch (8421052050) at the dealer but when I requested the mating connector was told they couldn't look that up but needed a part #. Surprised me but fortunately found the pn:
8237431756_be5ba3bc06.jpg

9098011250

They also sold me wires with terminals and crimp splices. Here's some tools and parts (see the new switch):
8236364881_da8a163455.jpg


Pulled harness from loom and cut off broken connector:
8237437332_9ca92b7fde.jpg

8236370699_69823d67f0.jpg


Spliced in new connector
8237436136_e4d59b1fa2.jpg


Shrink wrap on each splice and then the pair of wires. Reinserted wire into loom, removed broken switch, replaced with new switch, and connected them and now:
8236412755_c211a65326.jpg
 
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I bet this is what's wrong with my reverse lights. Thanks for posting this! About where on the tranny is the switch? Driver side, passenger side? Towards the engine or towards the back?
 
On mine it's on the passenger side, back a bit from what I think is the clutch arm (has a big rubber boot). Now to find the part number for the plug on the 2nd gen 4runner, mine's missing, and I made a post under the classic section asking.
 
I bet this is what's wrong with my reverse lights. Thanks for posting this! About where on the tranny is the switch? Driver side, passenger side? Towards the engine or towards the back?

It is on the passenger side and pretty well exposed when looking up at it. Your connection could be fine and just the switch itself is bad. I bought OEM Toyota and it was $43 from a local dealer. I later saw Rock Auto has one for $25 or so. It is a spring loaded mechanical switch and I could see it possibly fail internally from years of use.
 
So I replaced my switch today, and splashed about a quart of fluid allover myself and the sidewalk (I cleaned it up).

This was on a '94 3.0 manual. Did I screw something up or was it WAY overfilled?

Idk, I did my '99 3.4 a few years ago and nothing came out. I think I would have remembered. The 3.0 is a different trans, though. (W59 as opposed to my R150F).

It's hard to overfill a trans, as the fill hole is the level hole. Is your switch above or below the fill hole? That's really what you should have looked at rather than asking the internet. The answer was right in front of you.
 
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