You can DM there.

Yes it is, I have a "listing" up on the IS300 Facebook group: "The Real IS300 Classifieds".

A rattling noise in a brand-new vehicle is definitely frustrating, especially when one of the reasons you bought a Lexus was its reputation for cabin quietness. The good news is that isolated rattles are usually nuisance issues rather than signs of a larger defect. Since your noise seems to be coming from the roof area, some common suspects include: Overhead console (map lights, SOS button assembly, sunglasses holder) Wiring harnesses above the headliner Headliner clips or retainers Sun visor mounting points Rearview mirror housing Panoramic roof components (if equipped) Roof-mounted microphone or safety-system modules Before your appointment, try to note: Does the rattle occur only on rough pavement or also on smooth roads? Does it change when you press lightly on the overhead console or headliner? Does opening or closing the sunshade affect it? Is it temperature-related (cold mornings versus warm afternoons)? If you can reproduce the noise consistently, ask the dealer to perform a road test with you present. A "ride-along" is often the fastest way to identify an interior rattle because these noises can be notoriously difficult to duplicate once the vehicle reaches the service department. As for your concern about Lexus quality, I wouldn't let this single issue sour your opinion just yet. A roof-console or headliner rattle at 200 miles is annoying, but it's generally considered a fit-and-finish correction rather than a reliability problem. Most are resolved with adjustment, insulation tape, or replacement of a clip or trim component. I'd be annoyed too in a brand-new RZ, but I would expect the dealer to take it seriously and get it sorted under warranty. Once corrected, chances are good you'll have the quiet cabin you were expecting.

This is actually a fairly common type of complaint on the RX450h and other Toyota/Lexus hybrids, and the fact that it is intermittent makes it even more frustrating to diagnose. A few possibilities come to mind: 1. Brake pedal pivot or linkage (most likely) A dry brake pedal pivot bushing or linkage point can create a brief chirp or squeak when the pedal is pressed. The sound often seems to come from right behind the dashboard or near the driver's footwell. Temperature and humidity can affect it, which explains why it may disappear for days and then return. Dealers can sometimes eliminate it with lubrication of the pedal assembly pivot points. 2. Brake booster/actuator noises The RX450h uses an electrically assisted brake system rather than a traditional vacuum booster. The brake actuator and accumulator can produce various clicks, whirs, buzzes, and occasionally chirp-like sounds. If the chirp occurs exactly at the beginning or end of pedal travel, this is worth investigating. However, actuator noises are typically more mechanical/electronic sounding than a simple squeak. 3. Brake light switch contact The brake light switch is mounted near the top of the pedal assembly. A worn switch plunger or mounting point can occasionally chirp or squeak when the pedal moves past it. Since the switch only moves a tiny amount, the noise can be difficult to pinpoint. 4. Interior trim or dash component Sometimes the pedal movement slightly flexes the lower dash panel or a wiring harness clip. What sounds like a brake-system noise may actually be a plastic trim chirp transmitted through the dashboard. What I'd suggest: Try to determine whether the chirp occurs: With the vehicle OFF. In READY mode. While stationary. Only while driving. With the vehicle parked, have someone press the brake pedal repeatedly while you listen near: The pedal pivot. The brake light switch. The lower dash panel. If you can capture even a short audio recording, that can be surprisingly helpful to a technician. When taking it to the dealer, don't just say "brake noise." Instead, describe it as: That will steer them toward inspecting the pedal assembly, brake light switch, and booster/actuator area, rather than immediately looking at pads and rotors. One reassuring point: if the brakes feel normal, there are no warning lights, and the sound is only an occasional chirp heard inside the cabin, the cause is often something minor in the pedal assembly rather than a brake system failure.

I took it to my dealer, but they will not cover it in the warrany, (car is less then 3 years old). Is there an escalation I can do to Lexus company itself? How? Thanks.