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2024 Lexus RX — infotainment became glitchy after an OTA update

GarageGeekCommunity StarterAug 31, 20262024 Lexus RX 350hSeattle
After a software update the screen occasionally reboots and one saved setting keeps resetting. Is there a normal post-update reset procedure owners should try before booking service?
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36 replies

GarageGeekCommunity StarterCommunity StarterAug 31, 2026permalink
It did infotainment became glitchy after an ota update twice this week, both times after sitting. No change in mileage feel. Video is ugly but it shows the hesitation.
BrakeRoadieCommunity StarterCommunity StarterAug 31, 2026permalink
I'd want a measurement, not a hunch. A pressure test beats staring at a dry driveway if the 2024 Lexus RX is losing coolant with no puddle. That's the branch I'd chase this week. Write the result down so the next test isn't a repeat of the last one. I'll poke at it this weekend.
NoMarkupDaily893Community StarterCommunity StarterSep 1, 2026permalink
Asking because it changes the advice: Get a real battery/charging test on the 2024 Lexus RX, not just resting voltage, before blaming a module. You'll know quickly if you're on the wrong tree. Not gospel, but it saved me a headache. I've seen both outcomes, which is why I'd test instead of assume. If this is nothing, great. I want that in data.
RoadTripDIYerCommunity StarterCommunity StarterSep 1, 2026permalink
I hear you, though I'd still want a second check. Two 2024 Lexus RXs can feel identical and have different causes, so measure before you copy someone else's repair. Don't erase codes until someone who can help has seen them. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. Stop there until you know. If that fails I'll eat the diagnostic fee.
ShopLearner329Community StarterCommunity StarterAug 31, 2026permalink
Ask what changed right before it started. Move a coil or plug on the 2024 Lexus RX if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. This is from a 2024 Lexus RX in Seattle. No need to make it theatrical. Make the next action something you can finish this week. Only after sitting overnight so far.
TrackGeek594Community StarterCommunity StarterAug 31, 2026permalink
Agree — and I'd add this: A pressure test beats staring at a dry driveway if the 2024 Lexus RX is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. Learned this the expensive way on a previous car. Parking it somewhere I can hear it better next time.
QuietCollector76Community StarterCommunity StarterSep 2, 2026permalink
Same neighborhood, different next step: Capture voltage while the 2024 Lexus RX is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. This is from a 2024 Lexus RX in Seattle. Take it or leave it — that's what I'd do. Heat soak after errands is the other window.
GarageGeekCommunity StarterCommunity StarterSep 2, 2026permalink
Cleared nothing. I want service to see the alert on the 2024 Lexus RX first. Checking again after work.
GarageGeekCommunity StarterCommunity StarterAug 31, 2026permalink
Tried a second charger / second scan and the story on the 2024 Lexus RX didn't change. Cold start is when I can actually reproduce it.
HighwayRoadieCommunity StarterCommunity StarterSep 1, 2026permalink
Fair point. Counterpoint: Get a real battery/charging test on the 2024 Lexus RX, not just resting voltage, before blaming a module. Don't erase codes until someone who can help has seen them. This is from a 2024 Lexus RX in Seattle. Run the total, not the monthly, before you commit. That's coming from doing this as an owner, not a shop. Not driving it hard until I know more.
OldSchoolTunerCommunity StarterCommunity StarterAug 31, 2026permalink
This is usually cheaper to test than to guess. Two 2024 Lexus RXs can feel identical and have different causes, so measure before you copy someone else's repair. If the cheap test changes it, stop and reassess. Time, temperature, and whether it's in gear are the notes that actually help a shop. Might be overthinking it, but I'd rather overthink than overspend.
BoostDailyCommunity StarterCommunity StarterAug 31, 2026permalink
This is usually cheaper to test than to guess. Move a coil or plug on the 2024 Lexus RX if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. If they can't show the line item, I assume it's hiding. Cold start is when I can actually reproduce it.
ShopLearner329Community StarterCommunity StarterAug 31, 2026permalink
Intermittent stuff lies if you only catch it once. Get a real battery/charging test on the 2024 Lexus RX, not just resting voltage, before blaming a module. If the cheap test changes it, stop and reassess. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. That's the sequence I'd use. If it repeats twice more I'll book time.
WeekendTraveler488Community StarterCommunity StarterAug 31, 2026permalink
Start with the test that can prove you wrong. A pressure test beats staring at a dry driveway if the 2024 Lexus RX is losing coolant with no puddle. That's the branch I'd chase this week. This is from a 2024 Lexus RX in Seattle. Run the total, not the monthly, before you commit. I've seen both outcomes, which is why I'd test instead of assume. Checking again after work.
RoadTripDIYerCommunity StarterCommunity StarterAug 31, 2026permalink
I'd want a measurement, not a hunch. Swap the cheap/easy piece first on the 2024 Lexus RX and see if the fault moves. If the cheap test changes it, stop and reassess. That's the whole play. Heat soak after errands is the other window.
NoMarkupDaily893Community StarterCommunity StarterSep 1, 2026permalink
Log the conditions before you spend. Swap the cheap/easy piece first on the 2024 Lexus RX and see if the fault moves. You'll know quickly if you're on the wrong tree. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. This is from a 2024 Lexus RX in Seattle. Take it or leave it — that's what I'd do. I already checked the easy fluid levels.
GarageGeekCommunity StarterCommunity StarterSep 1, 2026permalink
I went back under the 2024 Lexus RX and it only happens after a heat soak, not on a cold start. This is me being the wet blanket on purpose.
HybridMechanicish897Community StarterCommunity StarterSep 1, 2026permalink
I'd want a measurement, not a hunch. Two 2024 Lexus RXs can feel identical and have different causes, so measure before you copy someone else's repair. Don't erase codes until someone who can help has seen them. This is from a 2024 Lexus RX in Seattle. Not gospel, but it saved me a headache. No warning lights, which is why I'm documenting it.
HighwayTraveler475Community StarterCommunity StarterSep 1, 2026permalink
I'd want a measurement, not a hunch. Move a coil or plug on the 2024 Lexus RX if it's cylinder-specific and see whether the code follows. Don't erase codes until someone who can help has seen them. Stop there until you know. Video is ugly but it shows the hesitation.
DetailScoutCommunity StarterCommunity StarterSep 1, 2026permalink
Log the conditions before you spend. Loaded-suspension checks on the 2024 Lexus RX catch play that a wheels-hanging inspection misses. That's the branch I'd chase this week. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. That's the sequence I'd use. This is the version I'd tell a friend.
HybridMechanicish897Community StarterCommunity StarterSep 1, 2026permalink
This is usually cheaper to test than to guess. A pressure test beats staring at a dry driveway if the 2024 Lexus RX is losing coolant with no puddle. That's the branch I'd chase this week. Take it or leave it — that's what I'd do. Heat soak after errands is the other window.
V8Nerd850Community StarterCommunity StarterSep 1, 2026permalink
I'd push back a little: Swap the cheap/easy piece first on the 2024 Lexus RX and see if the fault moves. That's the branch I'd chase this week. Just my two cents from doing this recently. I'll update if anything new shows up.
HighwayRoadieCommunity StarterCommunity StarterSep 1, 2026permalink
If it were in my driveway, capture voltage while the 2024 Lexus RX is actually failing — after it restarts you've lost the clue. You'll know quickly if you're on the wrong tree. If it doesn't change the out-the-door or the repair estimate, it's noise. I refuse to clear codes until someone else sees them.
HighwayTraveler475Community StarterCommunity StarterSep 1, 2026permalink
This is usually cheaper to test than to guess. Loaded-suspension checks on the 2024 Lexus RX catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. That's the whole play. Trying not to diagnose from the couch.
GarageGeekCommunity StarterCommunity StarterSep 1, 2026permalink
OP update: scanned the 2024 Lexus RX again and still only have the one pending code, no new lights. Cold start is when I can actually reproduce it.
QuietCollector76Community StarterCommunity StarterSep 1, 2026permalink
Start with the test that can prove you wrong. Loaded-suspension checks on the 2024 Lexus RX catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. This is from a 2024 Lexus RX in Seattle. Not gospel, but it saved me a headache. I've seen both outcomes, which is why I'd test instead of assume. No warning lights, which is why I'm documenting it.
RoadTripDIYerCommunity StarterCommunity StarterSep 1, 2026permalink
Log the conditions before you spend. Two 2024 Lexus RXs can feel identical and have different causes, so measure before you copy someone else's repair. Don't erase codes until someone who can help has seen them. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. Do that first. Climate here is different, so treat that as a local data point. I'd rather pay for diagnosis than a second guess-repair.
GarageGeekCommunity StarterCommunity StarterSep 1, 2026permalink
Tried a second charger / second scan and the story on the 2024 Lexus RX didn't change. If the story changes I'll post the new data.
QuietCollector76Community StarterCommunity StarterSep 2, 2026permalink
Fair point. Counterpoint: Swap the cheap/easy piece first on the 2024 Lexus RX and see if the fault moves. You'll know quickly if you're on the wrong tree. Just my two cents from doing this recently. No warning lights, which is why I'm documenting it.
NoMarkupFanCommunity StarterCommunity StarterSep 1, 2026permalink
If it were in my driveway, move a coil or plug on the 2024 Lexus RX if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. I'd want that in writing, not as a promise. I'd sleep better after that step, even if it finds nothing. I refuse to clear codes until someone else sees them.
GarageGeekCommunity StarterCommunity StarterSep 1, 2026permalink
OP update: scanned the 2024 Lexus RX again and still only have the one pending code, no new lights. Video is ugly but it shows the hesitation.
HybridMechanicish897Community StarterCommunity StarterSep 3, 2026permalink
Agree — and I'd add this: Capture voltage while the 2024 Lexus RX is actually failing — after it restarts you've lost the clue. Don't erase codes until someone who can help has seen them. Take it or leave it — that's what I'd do. Not trying to scare you — just skip the expensive first guess. No warning lights, which is why I'm documenting it.
WeekendTraveler488Community StarterCommunity StarterSep 1, 2026permalink
Ask what changed right before it started. Loaded-suspension checks on the 2024 Lexus RX catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. Run the total, not the monthly, before you commit. Video is ugly but it shows the hesitation.
WeekendTraveler488Community StarterCommunity StarterSep 2, 2026permalink
This is usually cheaper to test than to guess. Get a real battery/charging test on the 2024 Lexus RX, not just resting voltage, before blaming a module. That's the branch I'd chase this week. If it doesn't change the out-the-door or the repair estimate, it's noise. Make the next action something you can finish this week. Might be overthinking it, but I'd rather overthink than overspend.
GarageGeekCommunity StarterCommunity StarterSep 2, 2026permalink
Tried a second charger / second scan and the story on the 2024 Lexus RX didn't change. Not driving it hard until I know more.
NoMarkupDaily893Community StarterCommunity StarterSep 2, 2026permalink
Intermittent stuff lies if you only catch it once. Write temp, speed, and in-gear vs coast when the 2024 Lexus RX does it — then decide on parts. You'll know quickly if you're on the wrong tree. On “infotainment became glitchy after an ota update,” that was the fork that mattered for me. Just my two cents from doing this recently. This is the filter I use when the thread starts repeating itself. I keep a notes app thread for this now.
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