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RX400h

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Posts posted by RX400h

  1. Quote

    It seems like you’re dealing with multiple issues here. Let’s break them down:

    1. Speakers: The issue with your speakers could be due to a problem with the wiring or the amplifier. It’s also possible that the speaker failure is related to the work done on the gear shift box, especially if any wiring was disturbed during the process.

    2. Engine shutting off: This could be due to a variety of reasons. It could be a problem with the fuel delivery system, the ignition system, or even the engine control unit (ECU). A faulty speed sensor could cause the engine to shut off. It’s also possible that the problem is related to the transmission or speed sensors, especially considering the recent work on the gear shift box.

    3. Check Engine and TRAC OFF lights: The flashing check engine light is usually a sign of a serious problem that should be addressed immediately. It’s often associated with engine misfires which can cause damage over time. The TRAC OFF light indicates that the traction control system is not actively engaged. This could be due to a problem with the system itself, or it could be a side effect of another issue, such as a problem with the engine or transmission.

    4. Speedometer fluctuation: This could be due to a faulty speed sensor or a problem with the instrument cluster itself.

    Given the complexity of these issues, I would recommend taking your car to a professional mechanic for a thorough diagnosis. They have the tools and expertise to accurately identify and fix these problems. Please remember that continuing to drive with these issues could potentially cause further damage to your vehicle. It’s best to get them addressed as soon as possible.

     

  2. 18 hours ago, Abe Scott said:

        I have seen tutorials for changing the VVT solenoid, but no one has ever mentioned the VVT position sensor. Does it ever go bad? If so, how difficult is it to replace? 

    Quote

     

  3. Quote

    The range of an electric or hybrid vehicle can be influenced by several factors, including driving conditions, climate, and the vehicle’s state of health. Here are a few suggestions that might help you achieve the full 37 miles of range on your 2024 Lexus 450H+:

    1. Charging Infrastructure: Ensure you’re using the appropriate charging infrastructure. The RX 450h+ is equipped with a Level 1 vehicle charging cable for 120V outlets. However, at 240V, it can be fully charged in approximately 2.5 hours using the standard 6.6 kW Onboard Charger1. If you’re not already using a Level 2 charger, you might want to consider upgrading.

    2. Driving Habits: Your driving habits can significantly impact the vehicle’s range. Aggressive driving, high speeds, and frequent short trips can reduce the range. Try to maintain a steady speed and avoid hard acceleration or braking when possible.

    3. Climate Control: Using the heater or air conditioning can also reduce the range. If possible, pre-condition the vehicle while it’s still plugged in to reduce the energy used for climate control while driving.

    4. Vehicle Maintenance: Regular maintenance is essential for keeping your vehicle in top condition. Ensure your vehicle’s software is up-to-date, the tires are properly inflated, and the vehicle is serviced regularly according to the manufacturer’s recommendations.

    If you’ve tried these suggestions and are still not achieving the full range, it might be a good idea to contact a Lexus service center for further assistance. They can check if there’s a problem with the vehicle’s battery or charging system. Please note that real-world conditions may cause the actual range to vary from the manufacturer’s stated range

     

  4. Quote

    The Denso Iridium SK20R11 spark plugs you currently have are indeed a good choice for your 2000 RX300. The OEM part number 9008091180 you found online corresponds to these plugs1.

    As for the 4-digit number, it appears that the Denso Iridium SK20R11 spark plugs are also referred to as 3297. This might be the number you’ve seen in some places.

    When ordering from Rockauto or any other online store, it’s important to ensure that the spark plugs you choose are compatible with your vehicle. You can do this by checking the product details or using the website’s compatibility tool if one is available.

     

  5. Quote

    I’m sorry to hear about the issues you’re experiencing with your 1996 Lexus LS400. Let’s break down the situation and explore some possible causes:

    1. Shifter Lever and Plastic Breakage:

      • The broken shifter lever could indeed be related to the problems you’re encountering. If the plastic inside the shifter assembly is damaged, it may affect the proper engagement of gears, including the “Park” position.
      • Inspect the shifter mechanism carefully. If the plastic components are broken or misaligned, it could cause issues with gear selection and park lock.
    2. Speedometer and RPM Issues:

      • The speedometer not working properly could be due to various factors:
        • Speed Sensor: The speed sensor on the transmission or at the wheels might be faulty. These sensors provide input to the speedometer.
        • Wiring: Check for damaged or loose wiring related to the speedometer.
        • Instrument Cluster: There could be issues with the instrument cluster itself (e.g., faulty stepper motor, circuit board connections).
      • The RPM drop could be related to the same issues affecting the speedometer. Additionally, consider checking the throttle body, spark plugs, and air filter as they can impact engine performance.
    3. Key Stuck and Engine Shutdown:

      • The key not coming out could be related to the shifter not being in the correct position (e.g., not fully in “Park”).
      • The engine shutting off unexpectedly might be due to electrical issues caused by the broken shifter lever or other related components.
    4. Next Steps:

      • Inspect the Shifter: Reassemble the center console and ensure the shifter lever is functioning correctly. Make sure it engages properly in each gear, especially “Park.”
      • Check Speed Sensor: Test the speed sensor on the transmission (as you mentioned) and verify its output.
      • Inspect Wiring: Look for damaged wires or loose connections related to the speedometer and RPM.
      • Consider Professional Help: If the issues persist, consult a mechanic or a Lexus specialist to diagnose and address the specific problems.

     

  6. Quote
    1. Flickering Dashboard Lights or Headlights:

      • When the alternator overcharges, it can cause the headlights or dashboard lights to flicker. The excessive voltage coming through the system leads to this phenomenon.
      • However, this symptom alone doesn’t pinpoint whether the alternator is producing too much or too little charge. We need to consider other signs as well.
    2. Brighter Lights Than Usual:

      • An overcharging alternator makes the lights in your vehicle significantly brighter than usual. This effect applies to headlights, taillights, dashboard lights, and any other illuminated components.
      • Conversely, if the alternator were underperforming, you’d notice overall dimmer lights.
    3. Dashboard Warning Lights:

    Now, let’s explore potential causes and solutions:

    • Voltage Regulator Issues:

      • The voltage regulator is directly responsible for controlling the alternator’s voltage output. A faulty regulator can lead to overcharging.
      • Consider checking the voltage regulator’s functionality or replacing it if needed.
    • Wiring Problems:

      • Damaged alternator wiring or bad grounds can affect the charging system.
      • Inspect all connections, including ground wires, to ensure they’re solid and free from corrosion.
    • Battery Sensor or ECM Trouble:

      • Sometimes, an issue with the battery sensor or the car’s electronic control module (ECM) can cause overcharging.
      • Verify the health of the battery sensor and ECM.
    • Professional Diagnosis:

      • Given your thorough troubleshooting efforts, it might be best to consult a professional mechanic or an auto electrician.
      • They can perform more advanced tests, such as checking the alternator’s output and diagnosing any underlying issues.

     

  7. Quote

    Congratulations on your new 2013 Lexus RX 450h! It’s great to hear that you’re enjoying it, especially with the lovely dark red color. Let’s address your questions:

    1. Whirring Sound in Reverse:

      • The noise you’re hearing when you shift into reverse is likely related to the hybrid system. Specifically, it’s associated with the pedestrian warning system. This system generates a sound to alert pedestrians when the vehicle is moving in reverse. It’s designed to enhance safety, especially in situations where pedestrians might not notice the quiet electric operation of the hybrid.
      • The reason you don’t always hear it is because the system activates selectively. It typically operates when the vehicle is moving slowly in reverse, especially in parking lots or other areas where pedestrians might be present. When you’re backing up at higher speeds or in certain conditions, the system may not engage.
      • So, rest assured, this sound is normal and serves an important safety purpose.
    2. EV Mode Unavailable:

      • The “EV” button you mentioned is meant to activate the Electric Vehicle (EV) mode. In this mode, the vehicle runs purely on electric power, using the battery. However, there are specific conditions that must be met for EV mode to be available:
        • Battery Charge: The hybrid battery needs to have sufficient charge. If the battery is too low, the system won’t allow EV mode.
        • Speed: EV mode usually works at lower speeds, such as during city driving or parking maneuvers.
        • Temperature: Extreme temperatures (very hot or very cold) can affect the availability of EV mode.
        • Other Factors: Factors like air conditioning usage, engine temperature, and overall system demands also play a role.
      • If you’re getting the “EV mode currently not available” message, it’s likely due to one of these conditions not being met. It’s normal for the system to manage when EV mode is active to optimize efficiency and prevent battery depletion.
      • Remember that hybrids like the RX 450h are designed to seamlessly switch between electric and gasoline power based on driving conditions. So, while EV mode is a nice feature for short electric-only trips, the system prioritizes overall efficiency.

    Keep exploring your new hybrid, and don’t hesitate to reach out if you have more questions. Enjoy your Lexus adventure!

     

    • Like 1
  8. Quote

    Congratulations on your upcoming delivery of the 2022 Lexus RCF Fuji Speedway Edition! 🎉 This special edition model is truly a gem. Let’s dive into the details:

    As for the specific number of these rare beauties imported to Canada, it seems to be a bit of a mystery. Even the dealerships don’t have precise information on the exact count. But rest assured, you’ll be part of an exclusive club of lucky owners enjoying the thrill of the RC F Fuji Speedway Edition! 

     

  9. Quote
    1. DOME Circuit and Parasitic Drain:

      • The DOME circuit typically controls interior lights, including the dome light, map lights, and other cabin illumination.
      • When you removed the DOME fuse, it interrupted the power supply to these lights, which explains why the battery drain ceased.
    2. Radio and Information Panel Connection:

      • The unexpected part is how removing the DOME fuse affected the radio and center information panel.
      • While it might seem unrelated, there could be an interconnected module or shared component between these systems.
      • Some possibilities include:
        • Shared Ground: The DOME circuit and radio/panel might share a common ground point. Disrupting the DOME circuit could impact the ground connection for other components.
        • Control Module: There could be a control module that manages both the DOME circuit and the radio/panel. If this module malfunctions, it might cause unexpected behavior.
        • Wiring: Faulty wiring or a short circuit could inadvertently link these systems.
    3. Further Investigation:

      • To pinpoint the exact cause, consider the following steps:
        • Circuit Diagram: Obtain a wiring diagram for your vehicle. This will show the connections between various components.
        • Scan for Fault Codes: Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the radio or information panel.
        • Inspect Wiring: Physically inspect the wiring harnesses and connectors associated with the DOME circuit, radio, and information panel.
        • Professional Help: If you’re unable to identify the issue, consult a professional mechanic or an auto electrician (auto-electric shop). They can perform more in-depth diagnostics.

    Remember that automotive electrical systems can be intricate, and seemingly unrelated components may interact in unexpected ways. Investigating systematically will help uncover the underlying cause. Good luck!

     

  10. Quote
    1. Standard Headlights:

      • Pros:
        • Cost-Effective: Standard headlights are typically more affordable to replace or upgrade.
        • Reliable: They have been tried and tested over time, so their reliability is well-established.
        • Ease of Maintenance: Since they are common, finding replacement bulbs or parts is straightforward.
      • Cons:
        • Brightness: Standard halogen bulbs may not provide the same level of brightness as newer technologies like LEDs.
        • Limited Features: Standard headlights lack advanced features such as adaptive lighting or dynamic beam adjustment.
        • Aesthetics: Some drivers find them less visually appealing compared to modern LED or HID headlights.
    2. Sport Headlights:

      • Pros:
        • Enhanced Visibility: Sport headlights often use brighter bulbs (such as LEDs or HIDs), improving nighttime visibility.
        • Advanced Features: Sport versions may include adaptive lighting, which adjusts the beam pattern based on driving conditions.
        • Aesthetics: Sport headlights can give your GX470 a more modern and stylish appearance.
      • Cons:
        • Cost: Upgrading to sport headlights can be expensive, especially if you opt for high-quality LEDs or HIDs.
        • Maintenance Complexity: Advanced features may require specialized maintenance or repair.
        • Compatibility: Ensure that the sport headlights are compatible with your specific GX470 model and wiring.

    Remember that personal preferences play a significant role. If aesthetics and improved visibility matter to you, the sport version might be worth considering. However, if you prioritize cost-effectiveness and simplicity, sticking with standard headlights could be the better choice.

     

  11. Quote

    It seems you’re experiencing an annoying voice delay when making calls via wireless CarPlay in your new Lexus TX350. You’re not alone—other users have encountered similar issues with CarPlay in various vehicles. Let’s explore some potential solutions:

    1. Check Your Connection:

      • Ensure that your iPhone is properly connected to the car’s CarPlay system. Faulty cables or weak wireless connections can cause delays.
      • If using wireless CarPlay, verify that your iPhone and the car’s multimedia system are paired correctly.
    2. Reset CarPlay:

    3. Software Updates:

      • Make sure your iPhone’s iOS and the Lexus multimedia system are up to date. Sometimes software updates address compatibility issues.
    4. Incompatible Hardware:

      • Check if your iPhone model is compatible with CarPlay. Some older iPhones may not work seamlessly with certain car systems.
      • Similarly, ensure that your Lexus TX350’s multimedia system is compatible with CarPlay.
    5. Contact Apple Support:

     

  12. Quote

    Lexus GX 470 owners often wonder about the recommended transmission fluid change interval. Let’s delve into this topic:

    1. Official Recommendation:

      • While your service advisor’s response is not uncommon, it’s essential to consider the official stance. Lexus does not classify the transmission fluid as “lifetime.” Instead, they recommend regular maintenance.
      • The official guideline is to change the transmission fluid every 30,000 miles. Regular fluid changes help maintain optimal performance and extend the life of your transmission.
    2. Why Change the Fluid?:

      • Transmission fluid serves several critical functions, including lubrication, cooling, and cleaning. Over time, it can break down, accumulate debris, and lose effectiveness.
      • Regular fluid changes prevent premature wear, reduce the risk of transmission issues, and promote smoother gear shifts.
    3. DIY or Dealer Service?:

    4. Sealed Transmission Systems:

      • The GX 470’s transmission is a sealed system, which means there’s no traditional dipstick for checking fluid levels.
      • To change the fluid, you’ll need to use specialized equipment to drain and refill it through the cooler lines or other access points.
    5. Your Mileage:

      • At 60,000 miles, it’s an excellent time to consider a transmission fluid change. Regular maintenance ensures your GX 470 continues to perform reliably.

     

    • Like 1
  13. Quote

    Your 2009 Lexus IS250 experiencing a black radio screen with functioning sound but unresponsive buttons can be quite frustrating. Let’s explore some potential solutions:

    1. Main Circuit Board Replacement:

      • The navigation unit screen in your IS250 might be staying black upon startup, affecting the radio controls and climate control.
      • A common fix for this issue is to replace the main circuit board. This resolves the problem in 99% of cases.
      • If you’re comfortable with DIY repairs, you can consider sourcing a replacement circuit board and installing it yourself. Otherwise, seek professional assistance.
    2. Head Unit Assessment:

      • Usually, when a radio stops working, the issue lies with the head unit itself.
      • Since you’ve already replaced fuses related to the head unit, it’s worth checking if the eject button (if applicable) is functioning.
      • If the head unit remains unresponsive, it might indeed be time to consider a new head unit.
    3. Resetting the System:

      • Sometimes, a simple system reset can work wonders.
      • Try holding down the audio system power button for about 10 seconds until you see the Lexus logo appear. This indicates that the reboot process has begun.
      • After the reset, observe if the screen responds or if any buttons start working.
    4. Professional Diagnosis:

      • If none of the above steps yield results, it’s advisable to consult a professional technician.
      • They can perform a thorough diagnosis to pinpoint the exact issue and recommend the best course of action.

     

  14. I've never heard of coil springs wearing out, although I suppose that in an area where streets are salted during snowstorms, springs could be weakened by rust. If your car has been used in CA where snow is rare or non-existent, then the springs should be fine. Has your mechanic inspected them?

  15. Quote
    1. Low Oil Level: A common cause of ticking sounds is insufficient oil. Ensure that your engine has the proper oil level and that it’s clean. Contaminated oil or using the wrong viscosity can also contribute to engine noise1.

    2. Hydraulic Lifters: Tappets (also known as hydraulic lifters) could indeed be the culprit. These components maintain proper valve clearance and can make noise if they’re not functioning correctly. If they’re worn or malfunctioning, you might hear clicking sounds2.

    3. Exhaust Manifold Gasket Leak: A leaking exhaust manifold gasket can create ticking noises. Inspect the gasket for any signs of damage or leaks.

    4. Worn Engine Components: Over time, engine parts can wear out. Worn bearings, pulleys, or other components might cause clicking sounds. Pay attention to whether the noise changes with engine speed.

    5. Motor Mounts: Damaged or worn motor mounts can lead to engine movement and cause clicking or knocking sounds. These mounts stabilize the engine and absorb vibrations.

    6. Valve Train Issues: Improper lubrication of valve train components can result in ticking noises. Make sure your engine oil is at the correct level and of the right type.

    Recommendations:

    • Inspect the Oil: Check your oil level and quality. If needed, top up or change the oil.
    • Professional Inspection: Consider having a mechanic inspect your engine to identify the exact cause of the noise.
    • Listen Carefully: Pay attention to when the noise occurs (e.g., during acceleration, idle, or warm-up). This information can help diagnose the issue.

     

  16. Quote
    1. Check the Battery: Ensure that your car battery is fully charged. Sometimes low voltage can cause issues with the door locks. If the battery is fine, proceed to the next steps.

    2. Door Lock Actuator: Since you’ve already replaced the passenger door actuator assembly, it’s essential to verify that it’s functioning correctly. The actuator might be faulty or not properly synchronized. Here’s what you can do:

      • Reset the System: Disconnect the car battery for a few minutes and then reconnect it. This can sometimes reset the system.
      • Reprogram the Key Fob: Try reprogramming your key fob. Hold down the lock and unlock buttons simultaneously for a few seconds. Then, press the lock button again. If successful, the locks should cycle once.
      • Inspect the Actuator Wiring: Check the wiring connections to the actuator. Ensure they are secure and not damaged.
      • Test the Manual Lock/Unlock Switch: Use the interior door lock switch on the driver’s side armrest. If it still doesn’t work, proceed to the next step.
    3. Common Issues: Since both doors are affected, let’s consider common factors:

      • Central Locking Module: There might be an issue with the central locking module that controls both doors. Unfortunately, this module is usually located inside the door panel. You may need professional assistance to diagnose and fix it.
      • Fuse Check: Verify the door lock fuse. Sometimes a blown fuse can cause erratic behavior. Refer to your car’s manual for the fuse location.
      • Door Lock Settings: Some Lexus models allow you to customize door lock settings. For instance, you can choose whether all doors unlock or only the driver’s door when using the key fob. Check your owner’s manual for instructions on adjusting these settings.
    4. Emergency Access:

      • Trunk Release: If you can access the trunk, try using the trunk release button. Sometimes this can unlock all doors.
      • Fuel Door Opener: Look for the fuse box inside the trunk (rear, driver’s side). There’s a red 10 Amp fuse that covers the fuel door opener switch. Check if it’s blown1.
      • Garage Door Opener Trick: This might sound odd, but some Lexus owners have reported success by using their garage door opener. Here’s how:
        1. Clear any codes in the car (hold buttons 1 and 3 until they blink fast).
        2. Press the car’s open button (#1) and hold it up to a working garage door opener.
        3. Push the learn button on the garage door.
        4. Press and hold the #1 car button until it blinks fast.
        5. Release it and, within 5 seconds, press the #1 car button to see if the garage opens.
    5. Professional Help: If none of the above works, consider seeking professional assistance. A certified mechanic or a Lexus dealership can diagnose the issue more accurately.

    Remember, patience is key when troubleshooting car problems. Good luck, and I hope you regain access to your car soon! 🚗

     

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