14 years of composted crud in the lower cowl drain...

'11 reg cab 4wd with 114k
it definitely needed a good cleaning out
passenger side behind the mudflap and wheelhouse liner










pile of compost after removal from drain cavity

 

clean your drains!, gen2 taco people
...not a clue of any 'shop service' that would tackle this for you so a diy is way to go if you're able to get behind there, might have a bit more room with front wheel removed

a few bolts, a few new clips, and a couple of grommets need removed to get full access with hand behind the wheelhouse liner

 

Also check the dog leg area.


https://www.tacomaworld.com/threads/dog-leg.215022/

 

Is that the area behind the pull-away rubber flap in door jamb?

 

yes

 

Make a reminder, once a year (in the spring) to crawl under your truck for an hour and just observe and clean. Have a rag and wipe down anything dirty, look for leaks, etc..

Costs nothing but time.