You had the ML System before and the replacement is the 'newer' Mark Levinson?
Mark Levinson Amp Updated (1 Viewer)
- Thread starter Rpa11
- Start date
Is the 60890 or the 60891 the new amp they added?
60891 is newer
What is interesting is on the service paperwork you attached it says they added "86280-60890"
There's no service bulletin. I complained about it and asked for repair under warranty. They checked it out and agreed something wasn't working as intended.
I think the assumption is that if you can't show them how it's bad, they assume you don't need it to be better.
Just had my 2024 updated with the new AMP - much better! The issue for me was that if you leave the sound front speakers biased it was good - but as soon as you fade to the rear the sound died. The new AMP greatly helped with that. Will say that Lexus does stand behind their vehicles.
Has anyone updated their rear door speakers?
Has anyone updated their rear door speakers?
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Lexus San Diego declined to replace my amp (2024 GX550 OT+, 45k miles)
I brought the TX TSB and the invoice from this thread, and demoed the fader test to the tech. He admitted the rear has almost no bass, but said it's "designed like this". He said corporate would only approve a claim if he could reproduce both the high-volume cutoff and lack of bass, as stated in the TX TSB. The high-volume cutoff doesn't happen on my GX, so it's "working as intended". They did not have a 2026 on the lot for comparison.
I'm on software 1300, and they won't update to 1402. Even the base-speaker RX loaner sounded much better in the rear than my Mark Levinson.
Planning to escalate to Lexus corporate. Has anyone gotten a replacement or update without the cutoff symptom? Any SoCal dealers or advisors you'd recommend?
I brought the TX TSB and the invoice from this thread, and demoed the fader test to the tech. He admitted the rear has almost no bass, but said it's "designed like this". He said corporate would only approve a claim if he could reproduce both the high-volume cutoff and lack of bass, as stated in the TX TSB. The high-volume cutoff doesn't happen on my GX, so it's "working as intended". They did not have a 2026 on the lot for comparison.
I'm on software 1300, and they won't update to 1402. Even the base-speaker RX loaner sounded much better in the rear than my Mark Levinson.
Planning to escalate to Lexus corporate. Has anyone gotten a replacement or update without the cutoff symptom? Any SoCal dealers or advisors you'd recommend?
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The dealer will not do anything without corporate. You need to open you complaint there.
Thank you! I just opened a complaint; hopefully they can have an update soon
Took them about 10 days. Be sure to give the new amp part number on this thread
Update: Lexus support reached out to me and said they "discussed with dealership management.", the TSB is only applied to TX, and they would like to back up the dealer technician's conclusion that the amp replacement is NOT necessary, since the technician is "trained and certified". This is beyond my belief, and I am curious what training they did so the technician believes that rear speakers from a $1000 system should sound like a telephone speaker.
Anyway, Lexus support wanted to close my case. What else should I do to get this case escalated? Should I contact another dealership?
Anyway, Lexus support wanted to close my case. What else should I do to get this case escalated? Should I contact another dealership?
If Lexus NA is saying no, not sure what options you have left. Dealers will not do anything to replace under warranty if corporate says no.
They said they only do coordination, and since there is no official TSB for the GX, they will rely on the dealer technician's inspection
Not sure what your options are - you did confirm it’s the old amp ‘24?
Yep - that is the dog
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