2020 Toyota 4Runner Shocks Leaking? How to Diagnose and Fix

How to Fix 2020 Toyota 4Runner Shocks

This guide helps you address shocks issues on your 2020 Toyota 4Runner. Owners have reported various symptoms, often related to wear and tear or the XREAS system. As one owner reported: "Assuming the oil was changed regularly and the frame isn’t rusty, this should be a good vehicle for another 70-100k miles. You should budget for things like shocks and other suspension parts as they will be pretty worn out" (source. Let's dive into the specifics.

Symptoms

Owners describe several symptoms related to the 2020 Toyota 4Runner's shocks. The most basic indicator is simply "feel them", suggesting a degradation in ride quality that becomes noticeable over time. This could manifest as increased bounciness, a less controlled feeling on rough roads, or a general lack of responsiveness in the suspension. This sensation can be subtle initially, gradually worsening until it becomes quite apparent.

Another symptom arises specifically when dealing with aftermarket shocks. One owner shared a concerning experience: "Put these shocks on about a thousand miles ago and the collar holding the reservoir has moved over and started rubbing on the hose. any ideas? I moved the collar back a bit ago but it just spun back over and kept rubbing." (source. This issue highlights potential problems with installation or component fitment when upgrading the suspension. It underscores the need for careful attention to detail and proper torque specifications.

Finally, keep an eye out for leaks, especially if your vehicle is equipped with the XREAS system. This system, which is designed to improve on-road handling, is prone to leaking over time. As one owner discovered: "Now I need to get ready to rip out the XREAS system and buy some shocks as they are leaking." (source. Any visible fluid around the shocks is a clear indication of a problem, necessitating immediate attention. Leaking XREAS fluid not only compromises ride quality but can also lead to more extensive damage if left unaddressed.

In summary, be mindful of changes in ride quality, unusual noises, and especially any signs of leaks. Addressing these symptoms promptly can prevent more serious suspension problems down the road. Regular inspection of your shocks and suspension components is crucial for maintaining a comfortable and safe driving experience.

Most Likely Cause

Based on owner reports, the most likely cause of shock-related issues in the 2020 Toyota 4Runner, particularly in older models, is wear and tear of the XREAS system. The XREAS (Cross-linked Relative Absorber System) is a specific type of suspension system that some 4Runners are equipped with. It uses interconnected hydraulic lines to adjust damping based on vehicle movement, improving handling. However, this system is known to be prone to leaks and failures as the vehicle ages.

The interconnected nature of the XREAS system means that a leak in one shock can affect the performance of the entire system. Over time, the seals and hoses within the system can degrade, leading to fluid loss. This fluid loss not only reduces the damping effectiveness of the shocks but can also damage other components within the system. Owners often report needing to replace the entire XREAS system due to widespread leakage and performance degradation.

It's also important to consider that even standard shocks, without the XREAS system, will naturally degrade over time. As the vehicle accumulates mileage, the internal components of the shocks, such as the pistons and valves, wear down. This wear reduces the shock's ability to effectively dampen bumps and control body roll, leading to a less comfortable and less stable ride. In either case, regular inspections and timely replacements are key to maintaining optimal suspension performance.

How to Diagnose

Diagnosing shock problems on your 2020 Toyota 4Runner requires a systematic approach. Here's a step-by-step process to help you identify the source of the issue:

1. Visual Inspection: Begin by visually inspecting each shock absorber for signs of leaks. Look for fluid stains or dampness on the shock body, around the seals, and along the hydraulic lines (if equipped with XREAS).

   • Tools Needed: Flashlight, jack, jack stands

2. Bounce Test: Perform a bounce test at each corner of the vehicle. Push down firmly on the hood or trunk above each wheel and then release. Observe how the vehicle rebounds. A properly functioning shock should allow the vehicle to return to its normal ride height quickly and without excessive oscillation. If the vehicle bounces several times before settling, it indicates a worn or damaged shock.

   • Tools Needed: None

3. Road Test: Take your 4Runner for a test drive, paying close attention to how it handles bumps, dips, and turns. Listen for unusual noises, such as clunking or rattling, which could indicate worn shock bushings or loose components. Note any excessive body roll or a general feeling of instability.

   • Tools Needed: None

4. XREAS System Check (if applicable): If your vehicle is equipped with the XREAS system, check the hydraulic lines and connections for any signs of leaks or damage. Inspect the XREAS control module (typically located near the rear axle) for corrosion or other issues.

   • Tools Needed: Flashlight, jack, jack stands

5. Bushings Inspection: Examine the shock absorber bushings for wear, cracks, or deterioration. Worn bushings can cause excessive movement and noise, even if the shocks themselves are still in good condition.

   • Tools Needed: Flashlight, pry bar

6. Aftermarket Shock Collar Inspection: If you have aftermarket shocks, especially those with reservoirs, closely inspect the collar that holds the reservoir. Ensure it is properly positioned and not rubbing against any hoses or other components. As one owner experienced: "Put these shocks on about a thousand miles ago and the collar holding the reservoir has moved over and started rubbing on the hose. any ideas?" (source

   • Tools Needed: Flashlight, wrench (appropriate size for collar adjustment)

By following these steps, you can effectively diagnose most shock-related problems on your 2020 Toyota 4Runner. If you're unsure about any aspect of the diagnosis, it's always best to consult with a qualified mechanic.

Step-by-Step Fix

Here's a step-by-step guide to replacing the shocks on your 2020 Toyota 4Runner. This assumes you are replacing standard shocks. If you are addressing XREAS, the process is significantly more complex and likely requires professional assistance. Always prioritize safety and consult your service manual for specific torque specifications.

1. Gather Your Tools and Parts: Ensure you have the correct replacement shocks, along with necessary tools like a socket set, wrenches, jack, jack stands, penetrating oil, and safety glasses.

   • Owner Tip: "If you want a lift (and tires or it will look dumb), Bilsteins or Old Man Emu are probably your cheapest options. Bare ass minimum is shocks + springs front and rear." (source This suggests considering aftermarket options for improved performance or ride height.

2. Prepare the Vehicle: Park your 4Runner on a level surface, engage the parking brake, and loosen the lug nuts on the wheels you'll be working on.

3. Raise and Secure the Vehicle: Use a jack to lift the vehicle and securely place it on jack stands. Never work under a vehicle supported only by a jack. Remove the wheels.

4. Apply Penetrating Oil: Spray penetrating oil on the shock mounting bolts and nuts. Let it soak for at least 15-20 minutes to help loosen them.

5. Disconnect the Old Shock: Use the appropriate wrenches or sockets to remove the nuts and bolts securing the shock absorber. You may need to use a wrench to hold the shock shaft while loosening the nut.

6. Remove the Old Shock: Carefully remove the old shock from its mounting points. Pay attention to the orientation of any bushings or washers so you can reinstall them correctly.

7. Install the New Shock: Align the new shock absorber with the mounting points. Install any bushings or washers in the correct orientation.

8. Secure the New Shock: Tighten the mounting bolts and nuts to the manufacturer's specified torque. Do not overtighten.

9. Reinstall the Wheels: Mount the wheels and tighten the lug nuts hand-tight.

10. Lower the Vehicle: Carefully lower the vehicle to the ground and remove the jack stands.

11. Torque the Lug Nuts: Torque the lug nuts to the proper specification using a torque wrench.

12. Test Drive: Take your 4Runner for a test drive to ensure the new shocks are functioning correctly and that there are no unusual noises or vibrations.

If you encounter any difficulties during the process, or if you are uncomfortable performing any of these steps, it's best to seek professional assistance. Replacing shocks can be a straightforward DIY job, but it's essential to prioritize safety and proper installation.

Parts and Tools Needed

Here's a list of the essential parts and tools you'll need to replace the shocks on your 2020 Toyota 4Runner:

• Replacement Shocks: Choose shocks that are specifically designed for your 2020 Toyota 4Runner. Consider your driving style and needs when selecting the right shocks. (e.g., Bilstein, Old Man Emu)
• Socket Set: A comprehensive socket set with various sizes is essential for removing and installing the mounting bolts and nuts.
• Wrenches: A set of open-end and box-end wrenches will be needed for holding the shock shaft and tightening the nuts.
• Jack: A hydraulic jack is necessary for lifting the vehicle.
• Jack Stands: Use sturdy jack stands to safely support the vehicle while you work.
• Penetrating Oil: Penetrating oil helps loosen corroded bolts and nuts.
• Torque Wrench: A torque wrench is crucial for tightening the mounting bolts to the correct specification.
• Safety Glasses: Always wear safety glasses to protect your eyes from debris.
• Gloves: Wear gloves to protect your hands from dirt and grease.

Regarding the XREAS system, if you're considering replacing it, you'll likely need to replace the entire system, including the shocks, hydraulic lines, and control module. This is a complex and expensive job that typically requires specialized tools and expertise.

Real Owner Costs

The cost of addressing shock problems on your 2020 Toyota 4Runner can vary widely depending on the nature of the issue, the parts needed, and whether you choose to DIY or hire a professional.

• DIY Shock Replacement: Replacing standard shocks can be relatively affordable. The cost of aftermarket shocks typically ranges from $100 to $300 per shock, depending on the brand and quality. Add to that the cost of penetrating oil (around $10), and some basic tools if you don't already have them. The total cost for a DIY shock replacement can range from $400 to $1200, depending on the number of shocks replaced.
• Professional Shock Replacement: Hiring a mechanic to replace the shocks will significantly increase the cost. Labor rates vary, but you can expect to pay between $100 and $200 per hour. A typical shock replacement job can take 2-4 hours, depending on the complexity. Therefore, the total cost for a professional shock replacement can range from $600 to $2000 or more, including parts and labor.
• XREAS System Replacement: Replacing the XREAS system is the most expensive option. The cost of the parts alone can be several thousand dollars, and the labor involved is also significant. Expect to pay between $3000 and $6000 or more for a complete XREAS system replacement at a dealership or reputable repair shop.

Remember, these are just estimates. The actual cost may vary depending on your location, the specific parts used, and the shop's labor rates. Always get a written estimate from a mechanic before authorizing any work. As one owner recommended: "Save for good upgrades, don’t go cheap with them. If your doing this for looks, you bought the wrong model, you should have went with the sr5 premium" (source, suggesting that investing in quality parts upfront can save you money in the long run.

Prevention

Preventing shock problems on your 2020 Toyota 4Runner involves a combination of regular maintenance, careful driving habits, and proactive inspections.

• Regular Inspections: Inspect your shocks and suspension components at least once a year, or more frequently if you drive in harsh conditions. Look for signs of leaks, damage, or excessive wear.
• Proper Tire Inflation: Maintaining proper tire inflation is crucial for overall vehicle handling and suspension health. Overinflated or underinflated tires can put undue stress on the shocks and other suspension components.
• Avoid Overloading: Avoid overloading your vehicle beyond its specified weight capacity. Overloading puts excessive strain on the suspension system, accelerating wear and tear.
• Careful Driving: Drive carefully and avoid potholes, speed bumps, and other road hazards that can damage the shocks.
• Regular Maintenance: Follow the manufacturer's recommended maintenance schedule for your vehicle, including suspension-related services.
• Consider Upgrading: If you frequently drive off-road or in challenging conditions, consider upgrading to heavy-duty shocks that are designed to withstand more abuse. As one owner stated, "A leveling kit is not an upgrade on this rig. I have the literal same truck, wait for the shocks to die, and buy icon or king lift and level kits, not the cheap ones, the good ones that are full suspension and use the adjustment to level it out." (source

By following these preventative measures, you can significantly extend the life of your 2020 Toyota 4Runner's shocks and suspension system.

What Owners Say

Real experiences from TOYOTA owners:

Owner Experiences

"Levels are dumb for a lot of reasons. If you want a lift (and tires or it will look dumb), Bilsteins or Old Man Emu are probably your cheapest options." — Porkchop_Dog (source)

"If you want a lift (and tires or it will look dumb), Bilsteins or Old Man Emu are probably your cheapest options. Bare ass minimum is shocks + springs front and rear." — Porkchop_Dog (source)

"Put these shocks on about a thousand miles ago and the collar holding the reservoir has moved over and started rubbing on the hose. any ideas? I moved the collar back a bit ago but it just spun back over and kept rubbing." — BiG-bOi2169 (source)

Lessons Learned

⚠️ "Oh and every link in the rear as well. Still have icon springs and shocks for the rear to put in once they get delivered" — animatedhockeyfan (source)

Pro Tips from Owners

💡 "Assuming the oil was changed regularly and the frame isn’t rusty, this should be a good vehicle for another 70-100k miles. You should budget for things like shocks and other suspension parts as they will be pretty worn out." — usernamewho1234 (source)

💡 "You should budget for things like shocks and other suspension parts as they will be pretty worn out. This forum loves low mileage TRD Pro 4Runners with full over landing setups." — usernamewho1234 (source)

💡 "Save for good upgrades, don’t go cheap with them. If your doing this for looks, you bought the wrong model, you should have went with the sr5 premium." — Commercial_Blood2330 (source)

FAQ

Q: How long does it take to fix shocks?

A: Replacing shocks on a 2020 Toyota 4Runner can take anywhere from 2 to 4 hours, depending on your experience level and the complexity of the job. If you are replacing the XREAS system, expect the job to take significantly longer, potentially requiring a full day or more.

Q: Can I drive with bad shocks?

A: While you can technically drive with bad shocks, it is not recommended. Worn shocks can significantly compromise your vehicle's handling, braking performance, and overall safety. It's best to address the issue as soon as possible.

Q: Is this a common issue on the 2020 Toyota 4Runner?

A: Shock wear is a common issue on many vehicles, including the 2020 Toyota 4Runner, as components age and accumulate mileage. The XREAS system, in particular, is known to be prone to leaks and failures over time.

Q: DIY vs mechanic - what's recommended?

A: Replacing standard shocks is a relatively straightforward DIY job for experienced mechanics. However, if you are unfamiliar with automotive repair or if you are dealing with the XREAS system, it's best to seek professional assistance. As one owner shared: "You should budget for things like shocks and other suspension parts as they will be pretty worn out." (source, suggesting that planning for potential suspension work is a good idea, regardless of whether you choose to DIY or hire a mechanic.