ClubLexus - Lexus Forum Discussion - GS - 4th Gen (2013-2020)

Yet Another Mark Levinson Issue

bfromguam — Mon, 08 Jun 2026 07:19:13 GMT

Unfortunately, my ML amp was repaired, installed, used for a month, and went out again. I'm at a loss for words. Any advice? It came back with the same code. Happened today: at first, the audio on both Bluetooth and FM radio had static interference, after that, I heard no audio tone again, not even system tones. What a shame

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Squeaky brakes on 2016 GS 350 F Sport

jms123 — Sat, 06 Jun 2026 17:00:49 GMT

So I think, I got f-cked back in 2019 not knowing about a TSB - https://static.nhtsa.gov/odi/tsbs/20...73796-9999.pdf that I just learned about , had the front brakes done at like 20k that probably did not need them at JM Lexus in S. Florida. Was quite expenseive because they said with the F-Sport you needed to do the rotors

Fast forward to 2026, about 70k miles and I had my front brakes done by a service center, put on after market brakes , Akibonos , at least that is what I asked for.

Squeaking is really bad still. Going to go back to him, but any hints on how to solve the problem, other than spending again a huge amount of money at the Lexus dealer?

This is RWD model, not AWD

Front tires wearing excessively

ryad — Fri, 05 Jun 2026 02:34:37 GMT

Hi all, we have 2012 4th Gen GS350 Fsport RWD and have had it just over a year. 19" (RC350) wheels with 235 on the front Dunlop sport maxx. Stock suspension.

We have done about 15,000 kilometers so far, and the front tires have worn really bad on the inside.

When we first got the car the tires were fine and I had an alignment done for peace of mind, from then on the tires started chewing out int he inside so I took it back for him to check the alignment again. It seems it didnt help and are now bald on the inside edge.

I have ordered some new 245 tires this time, (will do 275 rear when the time comes) and he will be fitting them next week and an alignment. Is there any info I should be telling him before hand to aid in the alignment?

I have had large sedans in the past which were prone to inner front tire wear so understand the may be some compromise to make.

The car is just daily driver for wife so dont need any aggressive sports camber or anything at the cost of tire life.

How many kms or miles would be an average to expect for fronts?

Front Sway Bar bushings for AWD

goose300 — Wed, 03 Jun 2026 15:16:22 GMT

Hi all,

Chasing down an annoying clunk in the front end of my 13 AWD. Seems to be a low speed clunk that occurs over wavy pavement (think parking garage where its smooth but not flat). I'm looking for front sway bar bushings specific to the AWD model.

Since doing a suspension refresh last year (Struts, Tanabe lowering springs, front GSF LCA), I notice a clunk form on the front right of the vehicle in the conditions described above. It's somewhat of a popping/clunk noise.

I've since also replaced the sway bar links (all 4 corners), and replaced the front right upper control arm this past week. Still hearing the noise.

I believe it must now be either the sway bar bushings, or the lower strut fork bushing. Given the sway bar bushing is easier to replace, I'd like to start with that, however I can't seem to find a replacement for the bushings anywhere online.

Does anyone know where I can find front sway bar bushings specific to the AWD model? I can find the RWD part number listed, but now the AWD version.

Cheers

2016 Lexus GS350 F Sport

JayAhmed — Mon, 01 Jun 2026 19:14:54 GMT

Am I tripping or was the reverse camera screen full and not split? I just recently added a wireless carputech Apple CarPlay and everything went smooth, but now when I put it in reverse, it�s a split screen with the factory maps on the side. I feel like it was always a full screen and not a split screen.

What could have caused inside brake pad to be completely gone?

ljCharlie — Mon, 01 Jun 2026 17:56:49 GMT

Due to the back rear brake noise, we took both rear wheels off. We found that the inside brake pad was completely gone and the caliper piston was pushing against the rotor when pressing the brake. Small part of the piston was shaved off. This is the rear driver side. The rear passenger side is not as bad but the inside brake is worst then the outside. So, what could've caused the inside brake pad to wear out much faster than the outside? This is on my 2015 GS 350.

Weird Startup

Ranny48 — Fri, 29 May 2026 12:54:26 GMT

Happened on the initial start this morning, then I turned the car off and tried again and it still did it.

Any ideas? Battery or Starter?

Attached Files

IMG_6789.mov (18.89 MB)

Sparkplug replacement

netdiver — Wed, 27 May 2026 21:14:04 GMT

I've been trying to get a quote for sparkplugs replacement, and all SoCal dealers are around $1250. One Toyota dealer quoted me $1049 today, which is still more than expected.
By looking at it, 3 plugs are fairly easy to get to, but the other 3 look like PITA.
Where do you guys take your GS to, for service like that? I'm about 30 minutes north of LA.

Fuel mileage?

GSeag — Wed, 27 May 2026 15:31:40 GMT

I would prefer that the GS350 would allow me to reset when it starts figuring out fuel mileage like my 2015 Dodge Durango did, but that's water over the dam.

The best I have seen from my 2014 GS350 (around 100,000 miles, one owner in Texas) has been around 22 MPG. What is typical for y'all, and is there any way I can improve on that?

do 2GR-FKS have ACIS plenum/manifold flap,how often fails?

bladest — Sun, 24 May 2026 20:54:36 GMT

Hi friends , for lexus gs 350 year 2016 with engine 2GR-FKS , do this engine for gs 350 have , ACIS plenum/manifold flap , because on tachoma it have it and fails a lot , if gs have it how often fails ?

Window Switch Stopped working

Beatmd — Sat, 23 May 2026 17:30:03 GMT

So for the past couple of months my driver's window switch has been going in and out. Yesterday it fully went out with my window being like 90% open. Rain got in my car. But has anyone ran into this issue? I dont think its the actual switch, seems like its the wiring or something.

Headlight adjustment on 2014 GS 350

GSeag — Mon, 18 May 2026 17:11:08 GMT

As you can see, the right headlight on the 2014 GS 350 that I bought a couple of months ago is too low. On the road, the upper edge is only about 20 feet in front of the car. I have read the owner's manual, and everywhere online also says the same thing about the vertical adjustment. Like the black plastic covers, they say there is a vertical and a lateral adjustment below the holes. There is not!
When I remove the plastic covers, the only adjustment is that white plastic screw (partially obscured by the black bracket), which doesn't seem to do anything. Is that adjustment just gummed up, or what?

Bad Voltage Regulation

cowlilexus — Sun, 17 May 2026 17:32:16 GMT

Hello, why would alternator show good testing when I take it to Auto part store to test. When I install in car, I only see 1.5V coming out of alternator? It shows "bad voltage regulation" when testing in car installed. Has anyone seen this scenario?

Noises from rear when driving

ljCharlie — Sat, 16 May 2026 16:25:53 GMT

My son's 2015 GS 350 was making noises like scraping from the rear wheels, he said. He said he could feel it on his seat. Could this be a brake and/or rear rotor issue?

Goodbye club lexus

BlackMambaGS350 — Thu, 14 May 2026 19:33:16 GMT

Goodbye clublexus!! Thanks for the help. I sold my 2013 GS350 and got myself into a 2021 Ford F-150 3.5 Ecoboost Lariat. Loving the truck everyday.