How to Replace the Engine Air Filter on a 2018 Toyota C-HR (Step-by-Step)
Beginner-friendly instructions with tool list, part recommendations, safety tips, and post-install checks for 2018, 2019, 2020, 2021, 2022
How to Replace the Engine Air Filter on a 2018 Toyota C-HR (Step-by-Step)
Beginner-friendly instructions with tool list, part recommendations, safety tips, and post-install checks for 2018, 2019, 2020, 2021, 2022
đź”§ C-HR - Engine Air Filter Replacement
Your C-HR’s engine air filter sits inside the air box (air cleaner housing) and keeps dust and debris out of the engine. Replacing it helps maintain proper airflow, fuel economy, and smooth performance.
Difficulty Level: Beginner | Estimated Time: 0.2-0.5 hours
⚠️ Safety & Precautions
- ⚠️ Let the engine cool before working near the intake and engine cover.
- ⚠️ Keep tools and fingers clear of the radiator fan area (it can run unexpectedly on some vehicles).
- ⚠️ No battery disconnect is required for this repair.
đź”§ Required Tools
You'll need the following tools for this repair:
- Safety glasses
- Nitrile gloves
- Clean shop towel
- Flashlight
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Engine air filter - Qty: 1
đź“‹ Before You Begin
- Park your C-HR on level ground and turn the engine OFF.
- Open the hood and make sure the engine is cool to the touch.
- Have a clean towel ready so no dirt falls into the intake.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Locate the air filter housing
- Use a flashlight to find the black plastic air box (air cleaner housing) near the front/side of the engine bay with a large intake tube attached.
- Put on nitrile gloves and safety glasses.
Step 2: Unclip the air box cover
- Use your hands (no special tool needed) to release the metal retaining clips around the air box lid.
- If a clip feels stuck, wiggle it gently—don’t force it. Clips bend if you pry hard.
Step 3: Open the air box and remove the old filter
- Lift the air box lid just enough to access the filter (you usually don’t need to remove the whole lid).
- Remove the old air filter straight out, keeping the dirty side facing up so debris doesn’t fall into the box.
- Use a clean shop towel to wipe out loose dust inside the lower air box.
Step 4: Install the new engine air filter
- Insert the new filter into the lower air box in the same orientation as the old one.
- Make sure the filter’s rubber edge sits flat all the way around (no pinched corners). A crooked filter can let dirt in.
Step 5: Close the air box and re-secure the clips
- Lower the air box lid fully and check that it’s seated evenly.
- Snap each retaining clip back into place by hand.
- Use a flashlight to confirm there are no gaps along the lid seam.
âś… After Repair
- Start the engine and let it idle for 10–20 seconds.
- Listen for hissing/whistling (could indicate the air box lid isn’t fully clipped).
- Do a quick visual re-check that all clips are latched and the intake tube area wasn’t disturbed.
đź’° DIY vs Shop Cost
Shop Cost: $60-$120 (parts + labor)
DIY Cost: $15-$35 (parts only)
You Save: $45-$85 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.5 hours.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.

















