4th Gen RX Problems Guide
#1
4th Gen RX Problems Guide
Now that the 4RX has been out over a year, I thought it's about time to put together a list of common issues we have been experiencing to help others find a solution, bring awareness to potential buyers, or bring awareness to Lexus. Here is what I have observed ordered by number of replies in descending order. I will try to keep this first post up-to-date.
Mods - please consider making this a sticky.
Updated 1/26/2018
Format: (Replies + Replies on related threads) Title
Mods - please consider making this a sticky.
Updated 1/26/2018
Format: (Replies + Replies on related threads) Title
- (1096) Excessive noise and vibration - 1/26/18 - TSB L-SB-0003-18 released for the droning issue
- (732) Hesitation problems - 11/10/17: TSB L-SB-0109-17 partially addresses the problem
- (155) 350 gurgling air conditioner noise - 2/13/17: TSB L-SB-0101-16 fixes the issue
- (35 + 59) Leaking sunroof
- (6 + 84) Hand warmers barely warm
- (59) 350 oil leak (manufactured 01/16 & 02/16 only)
- (58) Squeaky wipers
- (15) 450h brake noise
- (10) F Sport grill peeling
- (9) Brake hold pedal smoothness
Last edited by ericsan13; 01-26-18 at 12:49 PM. Reason: Updated 1/26/18 - fixed links, added TSB links
#7
I must have lucked out as in 850 miles my 450h has not had any of these problems. There is some brake noise as I come to a stop but it is the regenerative system working.
My only worries are the wear on the starter having to start the engine many times a day.
On the bright side would the 450h wear less on the brakes because much of the power goes back in the battery while braking.
My only worries are the wear on the starter having to start the engine many times a day.
On the bright side would the 450h wear less on the brakes because much of the power goes back in the battery while braking.
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#8
Now that the 4RX has been out over a year, I thought it's about time to put together a list of common issues we have been experiencing to help others find a solution, bring awareness to potential buyers, or bring awareness to Lexus. Here is what I have observed ordered by number of replies in descending order. I will try to keep this first post up-to-date.
Mods - please consider making this a sticky.
Mods - please consider making this a sticky.
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/807592-2016-rx-350-excessive-noise-and-vibration.html"]Excessive noise and vibration[/url] - 2/13: Self-added dampers may help with noise and vibration
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/808183-hesitation-problem-at-various-speeds-merged-threads.html"]Hesitation problems[/url] - 2/13: Lexus has issued a TSB for this
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/821426-gurgling-air-conditioning-noise.html"]350 gurgling air conditioner noise[/url] - 2/13: Lexus has issued a TSB for this
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/821965-squeaky-wipers.html"]Squeaky wipers[/url]
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/823279-2016-rx-350-oil-leak.html"]350 oil leak (manufactured 01/16 & 02/16 only)[/url]
- https://www.clublexus.com/forums/hybrid-technology/840155-brake-noise-every-time-i-press-the-pedal.html"]450h brake noise[/url]
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/841319-2016-rx-f-sport-grill-peeling.html"]F Sport grill peeling[/url]
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/841675-windshield-leak-dripping-from-microphone-port.html"]Leaking sunroof[/url]
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/841657-break-hold-pedal-smoothness.html"]Break hold pedal smoothness[/url]
- https://www.clublexus.com/forums/rx-4th-gen-2016-present/841956-hand-warmers-not-warm.html"]Hand warmers barely warm[/url]
#9
#10
Hate to tell you but my droning don't start until after a thousand miles or so. It'll be hard to know for sure on a test drive. The hesitation is a bigger issue for me so I've learned to live with the weird low rpm drone/whine noise.
#11
[QUOTE=s4iscool;9898339]Hate to tell you but my droning don't start until after a thousand miles or so. It'll be hard to know for sure on a test drive. The hesitation is a bigger issue for me so I've learned to live with the weird low rpm drone/whine noise.[/Q
Exhausts notes generally do change after a 1000 miles or so. Doesn't surprise me at all that it started after a while. I haven't really been experiencing to much of the drone recently. Probably because I drive in manual most of the time. The other day it was in Auto, AC on and had four people in the car, Out of the blue that stupid drone noise appeared, how embarrassing trying to explain to my brother why this 50k+ car does this. Better yet explaining why Lexus says its a normal characteristic. I guess he wont buy a Lexus anytime soon.
Exhausts notes generally do change after a 1000 miles or so. Doesn't surprise me at all that it started after a while. I haven't really been experiencing to much of the drone recently. Probably because I drive in manual most of the time. The other day it was in Auto, AC on and had four people in the car, Out of the blue that stupid drone noise appeared, how embarrassing trying to explain to my brother why this 50k+ car does this. Better yet explaining why Lexus says its a normal characteristic. I guess he wont buy a Lexus anytime soon.
#12
First post has been updated. Did I miss anything?
Looks like out of the three top issues, Lexus has only addressed two of them. And even so, one of them is only partially fixed.
Hi Anita, I still wasn't able to find this in the FAQ and we still have new members asking about problems with the RX:
https://www.clublexus.com/forums/rx-...the-rx350.html
https://www.clublexus.com/forums/rx-...th-the-rx.html
https://www.clublexus.com/forums/hyb...en-rx450h.html
https://www.clublexus.com/forums/rx-...gen-rx350.html
Looks like out of the three top issues, Lexus has only addressed two of them. And even so, one of them is only partially fixed.
Hi Anita, I still wasn't able to find this in the FAQ and we still have new members asking about problems with the RX:
https://www.clublexus.com/forums/rx-...the-rx350.html
https://www.clublexus.com/forums/rx-...th-the-rx.html
https://www.clublexus.com/forums/hyb...en-rx450h.html
https://www.clublexus.com/forums/rx-...gen-rx350.html
Last edited by ericsan13; 11-10-17 at 11:13 AM.
#14
#15
I think it should be pointed out that, for some of the issues listed, the number of posts about those issues can be somewhat misleading. For at least a couple of the problem threads, the same 4 or 5 people have posted repeatedly, and they have said essentially the same things over and over again. I suspect that, if you examined those threads carefully, you would find that the number of different people who have posted and the number of posts that have added new information would be only a relatively small fraction of the total number of posts in those threads.