What level of "mods" are typically acceptable before voiding the warranty? I don't want to have to wait until the warranty is up before really dialing in the truck.
Any ideas?
First off I agree with Philsey. I have a ToyotaCare extended warranty on my 2004 Sport Edition V8 4WD and its been a great investment. That being said, the salesman was so desperate to sell me the warranty that he gave me zero deductible. So to me, my extended warranty has been extremely valuable! Combined with working at the dealership, I've had warranty replace components that have failed; i.e. my front differential due to a burnt pinion bearing...( still wonder how that happened.) To preemptively replacing my throttle body due to a minor coolant leak before it became worse OUT of warranty.
That being said, just because you paid for the warranty doesn't mean they won't try and weasel out of it. I have had to fight and argue with the warranty company over repairs and what is and isn't broken. Don't EVER let a warranty company try to pay or force you to repair your vehicle with used parts or non-OEM parts. They will also argue with you over some of the stupidest stuff in the world; i.e. my front differential they wanted us to rebuild it (not that I couldn't rebuild it, I've done them before,) but the factory doesn't really want us rebuilding rear ends. They rather us just replace the entire unit, which the warranty company thought was too expensive. Until I showed them a P&A on what brand new factory parts would cost + labor to remove, rebuild, and reinstall. They changed their minds and authorized a new 3rd member. LoL Point being, you'll have to fight them pretty hard sometimes. I had a forum member say the ToyotaCare wouldn't warranty his Hydraboost unit (the Combo Brake MC, ABS, Hydraulic Pump unit) because while the MC did fail, the ABS was an electrical component not covered under the warranty. With some help from the forum he beat the warranty company into sense. (Toyota states to replace these units as entire assemblies, thus its all one big piece in terms of parts.)
As for modifications, they cannot legally deny your claim based on your modifcations unless they can prove the modifications caused the failure in the first place. This doesn't mean they won't try (sometimes they do), it just means when you argue with them, you'll be in the right unless they can prove your lift or mod caused so and so to fail. My '04 is lifted, SW Bumper, 33" tires and the warranty inspector just snaps pictures and comments how he likes my truck.