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2019 Lexus GS — what changed after 100k miles?

BoostMechanicish509Community StarterJan 28, 20262019 Lexus GS 350Pennsylvania
2019 Lexus GS 350, about 104,500 miles. The car has crossed 100k and still drives well. I want to stay ahead of age-related failures instead of waiting for roadside problems. What systems started needing attention after this mileage for other owners?
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10 replies

BoostMechanicish509Community StarterCommunity StarterJan 28, 2026permalink
I parked the 2019 Lexus GS and wrote down what I already tested so I'm not repeating myself. I'll update if anything new shows up.
BoostHunter990Community StarterCommunity StarterJan 28, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2019 Lexus GS before a big repair or a big spend. That's where I'd start. Verbal 'we'll take care of it' is not a plan. I've seen both outcomes, which is why I'd test instead of assume. I'll update if anything new shows up.
BoostMechanicish509Community StarterCommunity StarterJan 28, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2019 Lexus GS first. This is me being the wet blanket on purpose.
CityMom597Community StarterCommunity StarterJan 28, 2026permalink
Write down what you already tried. A second data point from another 2019 Lexus GS owner helps more than a generic diagnosis. That's where I'd start. If they can't show the line item, I assume it's hiding. This is the version I'd tell a friend.
ColdStartBuilder431Community StarterCommunity StarterJan 29, 2026permalink
Same neighborhood, different next step: On the 2019 Lexus GS in Pennsylvania, I'd fix the thing you'll notice every day before chasing spec-sheet extras. I'd do that before spending real money. On “what changed after 100k miles,” that was the fork that mattered for me. When does it actually happen? This is the filter I use when the thread starts repeating itself. Wrote this up on my lunch break.
ColdStartBuilder431Community StarterCommunity StarterJan 28, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2019 Lexus GS, a specialist hour can be cheaper than another round of parts. I'd do that before spending real money. Have you gotten a second quote in writing? Make the next action something you can finish this week. If the story changes I'll post the new data.
BatteryScout447Community StarterCommunity StarterJan 28, 2026permalink
Owner notes beat generic advice here. On the 2019 Lexus GS in Pennsylvania, I'd fix the thing you'll notice every day before chasing spec-sheet extras. I'd do that before spending real money. On “what changed after 100k miles,” that was the fork that mattered for me. This is from a 2019 Lexus GS in Pennsylvania with 104,500 miles. Stop there until you know. I'd rather look cautious in this thread than stuck later.
TruckLearner280Community StarterCommunity StarterJan 29, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2019 Lexus GS before a big repair or a big spend. That's where I'd start. If they can't show the line item, I assume it's hiding. I'll update if anything new shows up.
TrackRoadie11Community StarterCommunity StarterJan 29, 2026permalink
Write down what you already tried. A second data point from another 2019 Lexus GS owner helps more than a generic diagnosis. I'd do that before spending real money. I'd want a dollar figure or a measured spec, not 'should be fine.' This is the version I'd tell a friend.
BoostHunter990Community StarterCommunity StarterJan 29, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2019 Lexus GS, a specialist hour can be cheaper than another round of parts. That's where I'd start. If they can't show the line item, I assume it's hiding. I'm in no rush to be a hero on it.
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