Shops quote $2,700–$3,300 for this one, and the quote usually isn't the ripoff, the job really is that big. Here's what's actually failing, what the correct repair involves, and the honest part: this is not a job I do in a driveway.
The 1UR-FE 4.6 V8 in the GX460 seals its front timing cover with FIPG sealant rather than a gasket, and the cover spans a tricky piece of geometry: the triple junction where the cover, cylinder head and engine block all meet. That three-way corner is the hardest spot for sealant to live, and it's exactly where these engines start to weep as the factory FIPG ages. Oil creeps out at the front of the engine, picks up road dust into a grimy film, and eventually starts dripping, some of it finding hot exhaust, which is the faint smoke owners notice.
The good news, relative to other Toyota V-engines with this disease: in the GX460 the job can be done in-vehicle. The bad news: it's still twelve to fifteen hours of labour, because everything in front of the timing cover, drive belt, accessories, pulleys, brackets, has to come off, and both sealing surfaces have to be cleaned back to bare metal before fresh sealant goes on. The camshaft seals sit right there once the cover is off, so replacing them at the same time is standard practice; skipping them invites a comeback leak from an inch away.
There's no version of this that heals itself. The seep rate climbs as more of the seam releases, and a GX that marks its parking spot today will be feeding its drive belt and front-end components a steady oil mist within a season or two.
If your Lexus is doing any of these, this is the likely cause:
Not certain that's what you're dealing with? Match the symptom in plain English first:
Or describe it to the AI mechanic, it'll tell you the likely cause for your exact Lexus in seconds, free.
See how that range compares across Mississauga, Oakville, Milton, Brampton and Etobicoke in the GTA Repair Price Index, honest shop & dealer ranges for the jobs people actually get done.
Timing Cover Reseal & Cam Seals is on my published list of jobs I turn down. It needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. That list is public on my trust page. I'd rather lose the job than learn it on your engine, and you should be suspicious of anyone who says yes to this over the phone.
So here's what I can genuinely do for you, holding a $2,700–$3,300 quote. Both are real, both are flat-priced, and both are worth more than a bad yes.
Before you spend $2,700–$3,300, have someone independent confirm that's actually what's wrong. This is a diagnosis, not the repair, no hoist, no lift, nothing comes apart. I scan it, test it, look at it with you, and tell you straight whether their diagnosis holds up. If it does, I say so and you go pay them with confidence.
Book the second opinion →At $2,700–$3,300 on a car that might be worth not much more, plenty of people replace instead of repair, that's a completely reasonable call. If that's where you're heading, get the next car measured before you hand over money: 150 published points, at the seller's location, written report the same day.
Book a pre-purchase inspection →Tell me what you've been quoted and what the car is doing. $100–$250 flat, at your location, and you get a straight answer either way.
Rather just have the quote read? The free quote check tells you whether the number is in line, no visit needed.
Jobs on this car that ARE mine:
Not so you can do it yourself, so you can tell whether the shop quoting you understands the job:
That's the job. It's why this one belongs on a hoist instead of in a driveway, and it's why $2,700–$3,300 usually isn't a ripoff, it's a big repair honestly priced. What's worth checking is whether that's really what your car needs.
Get the diagnosis confirmed firstPlain version: Timing Cover Reseal & Cam Seals needs equipment a driveway doesn't have, a hoist to get under it properly, a press or a machine shop for the parts that come out, and a controlled space for an engine or gearbox that's in pieces for days. I work out of driveways with hand tools. That's not false modesty, it's the published limit of what I take on, and it's listed on my trust page alongside the warranty.
What that means for you: this page is here to tell you what's failing and what it should cost, so you walk into a shop knowing the job instead of nodding at a number. And if you want that number checked before you pay it, that part I can do, $100–$250 flat, at your location.
Oil escaping at the timing cover lands on the drive belt and front accessories, and an oil-soaked belt stretches and fails early, usually at the least convenient moment. The drips finding exhaust are a smell now and a mess later. Most of all, it's a slow leak feeding on your oil level between services; on a V8 many owners only top up twice a year, that quiet loss is the real risk. The seam only releases further with every heat cycle.
Because they sit directly behind the work area, they're a decade old, and reaching them later means repeating most of this teardown. Replacing them while the cover is off costs minutes; replacing them next year costs another full day of labour. It's the same logic as doing the crank seal, cheap insurance at this access.
Front-of-engine leaks on the 1UR get misread all the time, valve covers and the oil cooler lines can drip into the same area. We start by degreasing and dye-tracing the leak before committing you to the big job. If it turns out to be a cheaper fix, that's what we'll tell you.
No. Timing Cover Reseal & Cam Seals is on my published list of jobs I turn down, it needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. I'd rather lose the job than learn it on your engine.
Two things, and both are real. A second-opinion diagnostic at your car, $100–$250 flat, at your location, so somebody independent confirms that's actually what's wrong before you commit to a $2,700–$3,300 repair. And if you're weighing replacing the car instead of fixing it, a pre-purchase inspection on the replacement, $149–$399 flat, at the seller's location.
Because the useful part isn't the wrench. It's knowing what's actually failing, what the correct repair involves, and that shops quote $2,700–$3,300 for it, so you walk in knowing the job instead of nodding at a number. If you want that number checked before you pay it, that part I can do.
Send it over for a free second opinion. I'll tell you straight what the job actually involves, and if their quote is fair, I'll tell you that too.
Get a Free Second OpinionOther makes:
I'm not the guy who does this repair. I'm the guy who tells you whether you actually need it, before you spend $2,700–$3,300. Second opinion at your car, $100–$250 flat, in Mississauga, Oakville, Milton, Brampton and Etobicoke.
Book a Second Opinion Inspect a Replacement CarYour options on this one