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Changes You'd Like To See in the Lexus RX 400h



  • mdntcallrmdntcallr Posts: 3
    i would like to see:
    1- even better gas mileage
    2- UPGRADE THE STEREO ALREADY!!. no tape deck in car, better pricing on SIRIUS & IPOD kit for dealer install, have an AUX input so some can use ipods to similar devices without a kit.

    3- led lighting in car with coloring that can be set by owner
    4- LEXUS LINK, how they didn't include this for the RX 400h is criminal. so fraking lame. i want it, and my wife has BMW assist in her car. i am jealous of that.
    5- plug in charging for battery when not being used.
  • krellukrellu Posts: 31
    Exclusive Spy Video and Photos: 2010 Lexus RX 350
    Inside Line
    Search: Sunday, July 27, 2008

    Home News Columns Road Tests Future Vehicles Feature Articles Auto Shows Photos & Video Forums CSX Future VehiclesExclusive Spy Video and Photos: 2010 Lexus RX 350 Related LinksFull Test: 2007 Acura MDX 2009 Honda Pilot vs. 2008 Mazda CX-9 vs. 2008 Toyota Highlander More InfoMore Future Vehicles Articles More Spy Shots

    2010 Lexus RX 350 Getting a Workout on the Nürburgring
    By Ed Hellwig, Lead Senior Editor Email | Blog

    Date posted: 07-17-2008

    STORY TOOLS Print this Save this Digg this!
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    You expect to see sports cars, sport sedans and even the occasional economy car on the Nürburgring, but now we're to the point where even luxury crossovers are being tuned on the twisty test circuit in Germany. The 2010 Lexus RX 350 recently hit the 'Ring, and thanks to a lack of camouflage the prototype gave us a good look at what's in store for the upcoming midsize crossover.

    If you're hoping for big changes you'll be disappointed, as the next RX looks much like the current model in terms of its overall size and shape. There's a slightly revised grille up front that's more angular in appearance along with a reconfigured headlight cluster.

    In back, a new set of LED taillights is the most noticeable difference. There are a few minor changes to the shape of the rear fascia, but unless you put the 2010 model side by side with the current RX you would find it hard to see the difference between the two.

    The profile of this new RX is slightly more aggressive than before with a slightly lower roofline. A new design for the rear side windows eliminates one of the smaller quarter windows to give the overall shape a cleaner look.

    There won't be big changes under the hood, either. A revised version of the current 3.5-liter V6 will provide the power with a six-speed automatic handling the gearchanges. A hybrid model will be available as well, most likely with the same powertrain as the current GS 450h.

    Although there have been rumors of an extended-length RX with three rows of seating, we have yet to see any prototypes that confirm the predictions. We expect that role will be filled by an all-new Lexus crossover built on the rear-wheel-drive platform that underpins the GS sedan. It will most likely replace the current GX 470 as Lexus looks to move away from body-on-frame platforms in favor of lighter, more space-efficient, car-based unibody crossovers.

    Look for the official debut of the 2010 RX 350 later this year with sales beginning in early 2009.

    See new Lexus models
    See future Lexus models

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    (Enlarge photo)
    Slightly revised headlights and a new grille are just a few of the RX's styling changes for 2010. (Photo by KGP Photography)

    (Enlarge photo)
    The overall shape of the greenhouse isn't much different than the current model, but expect slightly more room inside. (Photo by KGP Photography)

    (Enlarge photo)
    New LED taillights are one of the few noticeable changes in back. (Photo by KGP Photography)
  • The outside temperature gauge on the instrument panel takes too long to adjust to temperature changes. It's slow and also skips many temperatures on the °F scale. Once I saw my temperature toggling between 48° and 50°, and 49° was non-existent, the Lexus totally skipped it. I've also never seen 74, 76, 85, 87 and a bunch of other numbers, the Lexus outside temp. gauge never stops at these numbers. I've owned Lexus SUV's since 2001, and they are all the same. Many features of the vehicle are so high-tech, you'd think they could get this right.

    And a "miles to empty" (or projected range) readout somewhere on the instrument panel would be nice on the RX400h, I think they have this feature on the traditional gas engine RX models.
  • wwestwwest Posts: 10,706
    Due to the POORLY (thoughtless...??) designed mounting of the OAT sensor it is too easily influenced by radiant heating from the nearby A/C condensor and engine radiator so DSP, Digital Signal Processing, must be used to "smooth" the readout.

    Due to possible variations in driving style before and after "miles to empty" is not a predictable or reliable computation and is therefore being dropped from many computational displays.
  • bobgailbobgail Posts: 12
    1.idiot light to indicate fog lights are on

    2. ipod connector

    3. elapsed time trip clock

    4. free upgrade for nav. system- its only a dvd to be copied into the system!

    5. lights in the front and rear bumper relocated so they are not so prone to parking lot smashes

    6. strong bumper material that will not scratch or dent so easily
  • wwestwwest Posts: 10,706
    "...1. idiot light to indicate fog lights are on..."

    Since the Toyota/Lexus fog light implementation makes the fog lights less than useless, actually a detriment to your night time distance vision, why not just pull the fog light fuse and be done with it.
  • As seen on -

    Continuing in on the breakdown of the 2010 Lexus RX 350 (and probably hybrid model), here's a list of newly available-

    Optional equipment:

    Bi-Xenon HID Headlamps
    Automatic High Beam Feature
    Auto-dimming Rearview Mirror with Integrated Backup Camera
    Wallet-Size Card Key
    12-Speaker Premium Audio System
    USB Audio Input
    15-Speaker Mark Levinson Audio System
    Voice-activated HDD Navigation System
    XM Real-Time Traffic Capability
    19-inch Alloy Wheels
    P235/55R19 Tires
    Head-Up Display
    Vehicle Dynamics Integrated Management (VDIM)
    Driver Seat Variable Cushion Length Adjustment
    Front Passenger Seat Variable Cushion Length Adjustment
    Wide-View Side Monitor System
    Sport-Tuned Suspension
    Unique Wheel Finish
    Dual Screen Rear Seat DVD Entertainment System
    3-Position Driver Seat Memory System
    Heated & Ventilated Front Seats

    Standard Equip:

    18-inch Alloy Wheels
    P235/50R18 M+S Tires
    XM Satellite Radio (Factory Activated)
    Smart Entry System
    Push Button Start
    Bluetooth Capability
    Rear Seat Side Airbags
    Double Wishbone Rear Suspension
    Retractable Outside Rearview Mirrors
    Integrated Turn Signal Lamps
    Puddle Lamps
    Rear Seatbelt Pretensioners
    Hill Ascent Control (HAC)
    Temporary Spare Tire
    6-Speed Automatic Transmission
    Sequential Shift Mode
    Active Torque Control 4WD System
    Electric Power Steering
    Multi-Information Display
    Front Passenger Knee Airbag
    Premium Fabric Seat Surfaces
    Sliding Rear Seat
    Remote Release for Folding Rear Seatbacks
    Active Front Headrests with Whiplash Protection
    Roof Mounted Satellite Fin Antenna

    Deleted Standard Equipment

    Driver Foldable Armrest
    Front Passenger Foldable Armrest
    Full-Size Spare Tire
    Roof Rail Crossbars
    Full-Time 4WD System
    2-Position Driver Seat Memory System
    Auto-dimming Side View Mirrors
    Leather Seat Surfaces
  • wwestwwest Posts: 10,706
    Do you suppose one could transplant the upcoming Lexus ESh HSD system into an RXh and have a FE RX..???
  • nmrknmrk Posts: 8
    The INDEX is totally deficient. Try to find the definition for AFS in the 2006 manual. The light saying it was either on or off came on. I did not know what it meant. I found 300 definitions on the internet. I found one that seemed to apply and tried to look it up in the INDEX. Not there. However, I think I accidentally found it on page 65.

    I have suggested to LEXUS that all acronyms be listed with related words--e.g. AFS (Adaptive Front-Lighting System). I have suggested that OLD PEOPLE have money, buy expensive cars and don't all use computers so HELP US look things up. The manual is over 600 pages. Indexing is an automated word processing function not brain surgery. And, what does P/S stand for--Premenstrual Stress?

    Just make the Manuals user friendly.
  • wwestwwest Posts: 10,706
    "..Just make the Manuals user friendly.."

    Supply them on CD wherein I can build my OWN index or use one of a myriad of word search engines.

    Or...GO GREEN...!!

    Supply them ONLY on CD.
  • wwestwwest Posts: 10,706
    And while we're at it why not drop the separate electric rear drive motor in favor of the new Venza type F/AWD..??

    Then those of us that wished could have a much more SAFE RWD RXh with manual 4WD capability.
  • mtrsmtrs Posts: 4
    Having owned my RX400h for over a year, there are a number of changes that I'd like to see, mostly on the programming end. Overall, I think Lexus did a great job with the hardware, but the software could really use some improvement.

    1. The car already has a DVD changer, so it should be able to read MP3s from a DVD, not just from CDs.
    2. If a passenger is sitting in the passenger seat, enable the additional navi controls, such as full GPS and the telephone dialpad. While on the highway, I'd like for my wife to be able to toy with the system.
    3. Have a calculator in the navi system! That's a convenient extra to have while on vacation.
    4. Have a notepad in the navi system. Also a convenient extra to have on hand.
    5. Allow access to advanced programming features from the navigation menu-- change from miles to km, change from Fahrenheit to Celsius, change from gallons to litres. Change default lock doors when you shift from Park to no-lock, etc.
    6. iPod/iPhone integration with Navi display: there's so much capability here I wish it could be used:
    -Allow iPod Touch/iPhone display to be shown on Navi display.
    -Allow Navi touchscreen to operate the iPhone.
    -Music interface from iPhone, of course.
    -Full integration of iPhone contact list with the car's telephone screen.
    -Enable this functionality via an in-car WiFi network, so I can leave my iPhone in my pocket (no need to connect my iPhone with a cable every time I get in the car, and I odn't need to worry about forgetting the phone in the car when I get out).
    -Or enable the functionality via a USB port so that I can recharge my phone and keep it hidden in the center console.
    -Design it to allow other smartphones to be able to interface with it via USB or WiFi.
  • skycaptainskycaptain Posts: 33
    edited August 2010
    I would like to see many things. First I miss a Tachometer. Also I would like a 6 or 7 speed transmission instead of the constant speed trans. Also I am surprised that the electric motor doesn't kick in more to help with acceleration either off the light or on the freeway. Many times even though the battery is almost full, when I accelerate while cruising on the roadway, the gen-motor runs to charge rather than helping accelerate the vehicle for that brief acceleration period. This is when it should augment the gas engine and save some gas. It's a simple computer program redo. :shades:
  • snavelsnavel Posts: 1
    - I bought ( in Holland) th RX 400 H and was astonished to find casette player in this car and no Ipod connection.
    - I was also upset that the passenger cannot use the navigation during driving
    - Another frustrating issue is alle the warnings you get after starting, by using navigation, by driving backwards Due to all this warnings you have to press I dont use the backward draving camera.
    Another issue is the lights, By every car you turn on the dashboard lights as soon as you turn on the front ligthing. I happend several times that I was driving without ligthing as I thought that it was on becaus of the dshboard lighting that was on.
    - Integration with Iphone is terrible.
    - Usb connector with car system is needed.
    - music system that plays MP3 / DVD / a.s.o.

    The car itself is a fantastic car, however If I compare it with the Toyota prius of one of my employees, I found exactely the same navigation system with much more features, at less than half of the price of lexus..
  • wwestwwest Posts: 10,706
    "..instead of constant speed trans..."

    Pilot's license confuse you..?

    CVT, Continuously Variable Transmission.

    But for the RX400h not even that is the unvarnished truth.

    PSD, Power Split Device, the fully functional equivalent of a CVT.

    But the Toyota HSD's CVT/PSD is highly integral, one might even go so far as to say, the very HEART of the Toyota HSD design. It cannot even be made to have gear "notches" via firmware control without sacrificing FE.
  • West, I understand your point. However I don't understand why the transmission can't have a lock up at freeway speeds. Moderate accelleration (1/4 throttle) causes :shades: the engine to rev to almost redline during acceleration. I'm afraid I don't see this as very fuel efficient. Surely the V6 has enough torque( not to mention the electric motor torque) for mild to moderate acceleration without major revving.
    I stopped using my cruise control in the small hills of NC as the engine revs like a blender trying to maintain speed on the small hills and rises on the highway.

    One thing I would like to see is a "Fuzzy Cruise" setting. In other words a cruise that normally maintains a set speed but will allow a small speed decay on climbing hills without unnexcessary revving, say 5 mph to 7 mph, and reclaim cruise speed on the other side of the hill.

    On a side note, My wifes 2010 Prius has a CVT and it doesn't have the sensitive over revving problem on minor acceleration. It stays locked up at cruise unless you really push the pedal down to pass etc. So obviously the programming of the computer is diffderent for the Prius, even though the 4 cyl is less powerful an engine. Why not set the Lexus up the same?
  • wwestwwest Posts: 10,706
    The high engine revving might be more about FE than torque delivery. High revving does not necessarilly mean high gas consumption. All engines have a point in the rev band in specific circumstances that is most efficient and apparently that point on the V6 is consistently higher than the 4 cylinder.

    Personally I'm hoping to soon see a F/awd(***) Venza hybrid using the new 187HP 4-cylinder but upgraded to DFI (225HP..??). If the 2012 Ford Escape hybrid doesn't get there first.

    *** Weld the rear drive coupling SOLID and drop a front halfshaft for a more safe RWD. Or add a manual coupling to a front halfshaft and have a part-time 4WD. system.
  • wwestwwest Posts: 10,706
    "...lockup at freeway speeds.."

    In reality the PSD is a summing machine, sort of an analog computer with three input variables, if you will. Four variables, if you count the most important one, maintaining a constant speed even with so many "road" variables.

    Think of it as a constant speed prop, if that helps, the prop automatically changes pitch continuously/constantly in reaction to "load", keeping the engine RPM constant.
  • WWest, Thanks for the thoughtful reply. You defintely know your stuff. I'm honestly very impressed.
    Have you read about the new Pugeot Hybrid? It has all wheel drive. However the system is split with no physical connection between the front and rear wheels. The electric motor generator is on the rear wheels and the gas engiine drives the front wheels. Much simpler and the engine has a 6 speed automatic trans w/OD with no complicated power share coupling. I would love that sort of Hybrid system to appear at Toyota. It would lower costs and weight.

    I agree that I would prefer a rear wheel drive under dry everday driving as well with the front wheels only used on request or under slippery conditions. That used to be the basic setup for all 4WD vehicles. :shades:
This discussion has been closed.