Step-by-Step Lexus RX450H Hybrid Battery Removal and Reinstallation
Table of Contents
- Introduction
- Disconnecting the 12-Volt Battery
- Removing the Front Seats
- Releasing the Seat Retention Mechanism
- Removing the Battery Cover and Vents
- Disconnecting the Wiring Harnesses
- Removing the Anchor Bolts
- Cleaning the Battery Tray
- Installing the New Battery
- Reassembling the Vehicle
How to Remove and Reinstall the Hybrid Battery in a Lexus RX 450h
Hey guys, this is Corey with Palmetto Battery Pros. Today, we are going to walk you through the process of removing and reinstalling the hybrid battery in a 2010 Lexus RX 450h. If you're experiencing issues with your battery or want to replace it with a new one, this step-by-step guide will help you get the job done. So let's get started!
1. Introduction
Before we dive into the removal process, let's understand why we need to replace the hybrid battery in the first place. In this particular vehicle, we ran diagnostics and found the P080 code, indicating a fault in the battery. Additionally, we observed the voltages and internal resistance of the battery and concluded that it is worn out. While we will discuss how to rebuild the battery in another video, the focus here is solely on the removal and reinstallation process.
2. Disconnecting the 12-Volt Battery
To ensure safety during the battery removal, the first step is to disconnect the 12-volt battery. You will find the 12-volt battery in the trunk area, at the rear of the vehicle on the driver's side. Simply pop out the pins and remove the panel to expose the service plug. Disconnect the plug and move the front seats all the way forward to facilitate the removal process.
3. Removing the Front Seats
To gain access to the hybrid battery, we need to remove the front seats. Start by removing the anchor bolts that secure the seats. There are two 10 millimeter screws that hold the seats down. Remove them and disconnect the electronics from the seats using a screwdriver to push the pin in. You'll also need to release the seat retention mechanism, which can be done by pulling up on the gray lock. Additionally, detach the cable that allows the seat to move forward and back.
4. Releasing the Seat Retention Mechanism
To release the seat retention mechanism, pop off the cap at the end of the mechanism and remove the wire. Rotate the mechanism to slide the wire out of place. Next, disconnect the wiring harness and the seat retention rod.
Pros:
- Removing the front seats allows for easier access to the hybrid battery.
- Detaching the seat retention mechanism ensures safety during the removal process.
5. Removing the Battery Cover and Vents
A common reason for battery failure is the accumulation of debris, such as dog hair, inside the battery compartment. Therefore, before removing the battery, it's essential to clean the area. Start by removing the plastic clip and gently popping out the trim. This will expose the high voltage battery. Vacuum any debris, ensuring that the battery and the surrounding vents are clean and free from obstruction.
Con:
- Accumulation of debris can lead to battery failure.
6. Disconnecting the Wiring Harnesses
Before removing the battery, make sure all the wiring harnesses connected to it are properly disconnected. There should be one harness near the service plug. Remove the cover over the service plug and disconnect the harnesses. Ensure that you test the voltage and verify no voltage is present at the battery before proceeding.
7. Removing the Anchor Bolts
To remove the battery, you'll need to detach it from the anchor bolts. There are approximately 10 anchor bolts that hold the battery in place. Use a 12-millimeter wrench to remove these bolts. Once the bolts are removed, carefully lift the battery out of its position.
8. Cleaning the Battery Tray
Before installing the new or repaired battery, take the time to clean the battery tray thoroughly. This will ensure a proper fit and prevent any debris from affecting the performance of the new battery.
9. Installing the New Battery
When installing the new battery, run the wiring harness, as well as the main positive and negative cables, through the opening on the bottom of the battery tray. Once in position, connect the main positive and negative cables and plug in the harnesses. Make sure everything is correctly connected.
10. Reassembling the Vehicle
After installing the new battery, reverse the steps to reassemble the vehicle. Replace the covers, secure them with mounting bolts, and ensure that the seat retention mechanism is securely connected. Finally, put the seats back in place and attach all the necessary components.
Congratulations! You have successfully removed and reinstalled the hybrid battery in your Lexus RX 450h. If you have any comments, suggestions, or questions, please leave them below. We appreciate your support and look forward to assisting you with any future hybrid repairs.
Highlights
- Safely remove and reinstall the hybrid battery in a Lexus RX 450h
- Address common battery issues such as worn-out batteries
- Detailed step-by-step guide with clear instructions and visuals
- Importance of disconnecting the 12-volt battery for safety purposes
- Removing the front seats and releasing the seat retention mechanism
- Cleaning the battery tray to ensure proper battery performance
- Installing the new battery and reassembling the vehicle
- Tips and precautions to prevent battery failure in the future
- Rebuild your battery with aftermarket battery kits
FAQ
Q: How do I know if my hybrid battery needs to be replaced?
A: Common signs of a failing hybrid battery include reduced fuel efficiency, warning lights on the dashboard, and decreased power output.
Q: Can I replace the hybrid battery myself?
A: While it is possible to replace the hybrid battery yourself, it is recommended to seek professional assistance due to the complexity and safety risks involved.
Q: How often do hybrid batteries need to be replaced?
A: The lifespan of a hybrid battery can vary depending on factors such as driving conditions and maintenance. On average, hybrid batteries may need to be replaced after 8 to 10 years or around 100,000-150,000 miles.
Q: Are aftermarket battery kits reliable?
A: Aftermarket battery kits can be a cost-effective alternative to OEM replacements. However, it is important to choose high-quality and reputable brands to ensure proper performance and longevity.
Resources:
