4th Gen RX Problems Guide
Thread Starter
Racer
Joined: Sep 2012
Posts: 1,304
Likes: 177
From: WA
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; Jan 26, 2018 at 12:49 PM. Reason: Updated 1/26/18 - fixed links, added TSB links
Lexus Champion
Joined: Feb 2013
Posts: 2,954
Likes: 235
From: SoCal
Thread Starter
Racer
Joined: Sep 2012
Posts: 1,304
Likes: 177
From: WA
Glad to hear. A lot of folks seem to come here and want to know what they should expect in terms of issues. It's also a good way to keep Lexus informed/accountable for the problems they caused.
Pole Position
Joined: Jan 2005
Posts: 3,312
Likes: 542
From: Florida
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.
Trending Topics
Racer
Joined: Oct 2016
Posts: 1,404
Likes: 215
From: Texas
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]
ClubLexus Stories
Celebrating Lexus & Toyota from Around the Globe
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!
Michael S. Palmer
10 Best Lexus Models No One Remembers
Joe Kucinski
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing
Michael S. Palmer
Top 10 Lexus & Toyotas to Drive Before You Die!
Joe Kucinski
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation
Joe Kucinski
Lexus LC500 Convertible Auction: A Preview of Rising Values?
Brett Foote
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler
Michael S. Palmer
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)
Joe Kucinski
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!
Brett Foote
Lexus Test Driver
Joined: Apr 2014
Posts: 1,161
Likes: 117
From: ca
Pit Crew
Joined: Dec 2012
Posts: 221
Likes: 21
From: CA
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.
Pole Position
Joined: Nov 2016
Posts: 355
Likes: 53
From: NY
[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.
Thread Starter
Racer
Joined: Sep 2012
Posts: 1,304
Likes: 177
From: WA
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; Nov 10, 2017 at 11:13 AM.
Intermediate
Joined: Dec 2008
Posts: 300
Likes: 19
From: OH
Racer
Joined: Oct 2016
Posts: 1,404
Likes: 215
From: Texas
Lead Lap
Joined: Aug 2013
Posts: 4,279
Likes: 1,034
From: Illinois
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.