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2020 ES 300h Hybrid Battery Cooling Filter Location & Replacement

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Ryan M. · rep 0 · May 22, 4:45 AM · 1 replies · solved · Question

Vehicle: 2020 Lexus ES 300h Luxury

I have a 2020 Lexus ES 300h with about 60,000 miles on it. I've been reading about the importance of cleaning or replacing the hybrid battery cooling filter to prevent overheating and prolong battery life. I'm trying to locate it and figure out if it's a DIY job.

Does anyone know where this filter is typically located in the ES 300h? Are there any special tools needed, or is it a straightforward process? I want to make sure I'm doing everything I can to maintain my hybrid system.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:45 AM

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ClearTheCode admin answer:

Maintaining the hybrid battery cooling system is crucial for the longevity and efficiency of your 2020 Lexus ES 300h. The hybrid battery generates heat during operation, and the cooling fan and filter ensure it stays within optimal temperature ranges. A clogged filter can lead to reduced battery performance and premature wear.

Here's how to address it:

  1. Location: In most Lexus ES 300h models, the hybrid battery cooling air intake filter is located inside the cabin, typically behind the rear passenger seat or in the trunk area, often accessible by removing a small trim panel. For your 2020 ES 300h, it's usually on the passenger side, near the rear seat back or under the rear parcel shelf.
  2. DIY Feasibility: This is generally a straightforward DIY task that requires minimal tools, usually just a trim removal tool or a flathead screwdriver to carefully pry open the access panel.
  3. Process:
    • Ensure the vehicle is off and in 'Park'.
    • Locate the access panel for the hybrid battery cooling fan intake. It's often a small, slotted grille.
    • Carefully pry off the panel to expose the filter.
    • Remove the old filter. It might be a fabric-like material or a small foam pad.
    • Clean the filter with compressed air or replace it with a new OEM or high-quality aftermarket filter.
    • Reinstall the filter and secure the access panel.
  4. Maintenance Interval: It's recommended to inspect and clean this filter every 15,000-30,000 miles or annually, especially if you frequently carry pets or drive in dusty environments. Replace it if it's heavily soiled or damaged.
  5. When to See a Shop: If you notice any warning lights related to the hybrid system, unusual noises from the cooling fan, or if you're uncomfortable accessing the area, it's best to have a Lexus technician inspect the system. They can also perform a diagnostic scan to check the health of the hybrid battery and cooling system.
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