I was wondering if anyone knew Toyota's policy on after-market mods. I have a brand new TRD that I want to put a grill guard and side rails on. I have seen some manufacturers claim that there after-market products won't void the factory warranty but I would rather trust someone with experience. Any help would be appreciated.

my 2000 has had the following mods (in order since purchase):<br>K&N air filter<br>Revtek 3" suspension lift<br>Performance Accessories 3" body lift<br>33x12.5 BFG MT's on 15x8 rims<br>custom weld-on rock sliders<br>custom winch mount bumper (weld-on brackets)<br>custom wrap around rear bumper<br>winch (i did the wiring)<br>2 Procomp floodlights (i did the wiring)<br>2 PIAA racing lights (i did the wiring)<br>2 Optima batteries (i welded the mount for #2 and wired it in)<br>in-bed rack system for hi-lift, pul-pal & spare (my welding)<br><br>since these have gone in, i've had the following visits to the toyota dealer's service department:<br><br>faulty oxygen sensor replaced under warantee ($0)<br>loose bolt in driver's door caused rattle & window scratch (replaced bolt, retinted window - $0)<br>rotations, balances, alignments (standard charges)<br>oil changes (standard charges)<br><br>the point is that they're saavy enough to figure out if the cause of an individual mechanical failure is related to a modification or if its a faulty part. if the failure of my oxygen sensor had been due to me crushing the thing with a rock on a trail, it wouldn't have been replaced for free. the bolt was probably rattled loose from heavy offroading but it's SUPPOSED to take it, so they fixed it and the damage it caused. <br><br>however, if i crack my frame somewhere right next to an aftermarket weld, they'll probably blame the weld. if i snap an axle or a universal joint, they may or may not honor the powertrain warantee after the lifts and larger tires... i'll cross that bridge when i come to it.<br><br>in general though, the mechanics love what i've done to the truck and they give it red-carpet treatment when i bring it in. i wouldn't avoid upgrades just based on warantee issues unless it involved substantial changes to the basic mechanics such as a solid front axle conversion or replacing the transfer case and re-gearing.<br><br>...and you can always ask the dealership ;)<br><br>jon

I had a Ranger that started this a little past 100,000 miles. A new set of plug wires and distributor fixed it.

Sorry, I replied to the wrong post!