How to Fix the 2020 Land Cruiser's Squeaky Brakes and Towing Fade

How to Fix Brake Pads Issue

For owners of the 2020 Toyota Land Cruiser, brake pad issues often manifest as persistent noise or performance degradation, particularly after demanding use like towing. These problems are well-documented by other owners and often stem from specific, identifiable causes. As one owner shared about a common complaint: "I got the LCLC trim it hit the sweet spot on features and tech. No major mechanical issues at all for me just the screeching front brakes that got fixed under a recent tsb." — jmqb1. This guide will walk you through the symptoms, diagnosis, and solutions based on real-world experiences from the Land Cruiser community.

Symptoms

The most frequently reported symptom is a high-pitched, persistent squeak or screech from the brakes, especially at low speeds. This isn't just an occasional noise; it's a constant annoyance that many owners notice shortly after taking delivery or during routine driving. The sound is often most pronounced when first applying the brakes after the vehicle has been sitting.

Beyond noise, owners report issues with brake performance under load. A significant symptom is brake fade and overheating, which occurs during prolonged or heavy braking scenarios. This is particularly common when towing without utilizing the vehicle's full suite of towing aids. One owner described a harrowing experience: "Coming over Sonora Pass, dropping 3000 ft in 9 miles, hauling a teardrop camping trailer my brakes overheated and started to fade. I had electric trailer brakes but did not use the Tow/Haul feature (moronic ignorance)." — PDundon. This overheating can lead to a soft pedal, reduced stopping power, and a noticeable warmth radiating from the wheel hubs.

Another symptom is the aftermath of such an overheating event: glazed brake pads. When pads overheat, the binding resin can melt and re-harden on the pad surface, creating a smooth, glass-like layer. This glazing significantly reduces friction, leading to poor braking performance during normal driving and can sometimes cause the vehicle to pull slightly to one side if only one set of pads is affected. The issue is serious enough that there is a Technical Service Bulletin (TSB) from Toyota addressing the brake squeak, though not all dealers are immediately aware of it, as noted by an owner: "Brought LC in for brake squeak and camera recall I had to tell them about the tsb for the squeak and they didn’t know what I was talking about Wild that I had to explain it to them." — LCDakota.

Most Likely Cause

The primary cause of the widespread brake squeak in the 2020 Land Cruiser is attributed to the composition or design of the original equipment (OE) brake pads, specifically for the front brakes. This is formally recognized by Toyota, which issued a Technical Service Bulletin (TSB) to address the problem. The TSB likely involves replacing the front brake pads and shims with a revised part number that alters the material to reduce harmonic vibration, which is the source of the screeching noise. The issue is not indicative of a safety defect with the braking system's function but is a pervasive noise, comfort, and quality concern.

For performance issues like fading and glazing, the root cause is often driver-related technique combined with the vehicle's heavy weight, rather than a faulty part. The most common scenario is aggressive braking while towing, especially in mountainous terrain, without engaging the Tow/Haul mode. This mode adjusts transmission shift points and, crucially, enhances the integrated Trailer Brake Controller's functionality to better manage descent, preventing the truck's physical brakes from doing all the work and overheating.

How to Diagnose

Diagnosing these brake issues is straightforward and can be done with minimal tools. For the common squeak, the diagnosis is almost entirely based on the symptom: a consistent, high-pitched screech from the front wheels, particularly during light braking. If your truck has this noise, it is almost certainly covered under the TSB. Your first step should be to call your local Toyota dealership's service department, reference TSB #BR009-21 (or a later revision—always ask for the most current TSB regarding front brake noise on a 2020 Land Cruiser), and schedule an inspection.

For diagnosing overheating or glazed pads, you will need to do a physical inspection. After a drive where you noticed poor performance or smell, safely jack up the truck and remove the wheels. Always use proper jack stands for safety. Inspect the brake pads. Glazed pads will have a shiny, smooth, almost glass-like surface on the friction material, often darker than normal. Check the brake rotors for discoloration—bluish or purplish hues indicate extreme heat. Also, feel the rotor surface for deep grooves or scoring. As one pragmatic owner suggested for a glazed pad scenario: "If it were mine............I'd check the rotors for grooving and if they aren't damaged, I'd just drive with the pads like they are. If you notice poor braking during normal driving, I'd replace the pads at that time." — EOD Guy.

If you are experiencing issues while towing, diagnose your driving habits and settings. Verify your trailer's electric brakes are functioning correctly by using the manual control slider on the dashboard. Ensure the truck recognizes the trailer by checking if the instrument cluster displays "Trailer Connected." An owner troubleshooting this noted: "Does your dash say trailer connected? I built my square drop and when I plug it in it says TBC not available but I have electric brakes on the trailer." — LC510. This indicates a possible wiring fault between the truck and trailer that would prevent the integrated controller from helping.

Step-by-Step Fix

Fix for Squeaky Brakes (TSB Repair):

1. Confirm the Symptom: Verify the screech is coming from the front brakes during light application.
2. Contact Your Dealer: Call your Toyota dealership service department. Do not just schedule a "brake inspection." Specifically state: "I have a 2020 Land Cruiser with a front brake squeak. I understand there is a Technical Service Bulletin for this issue. Can you look up TSB BR009-21 and schedule me for that repair?"
3. Prepare for Your Visit: Be persistent. As owner LCDakota experienced, not all service advisors are initially aware of the TSB. Have the TSB number ready. The fix involves the dealer replacing the front brake pads and shims with the updated parts.
4. Inspection and Repair: The dealer will inspect the brakes. If the pads are worn beyond a certain point, they may recommend rotor resurfacing or replacement at an additional cost, but the TSB-covered pad replacement should resolve the noise if the rotors are in good condition.
5. Post-Repair Test Drive: After the repair, test drive the vehicle, focusing on low-speed braking in a quiet area to ensure the squeak is gone.

Fix for Glazed Pads or Overheating (DIY):

1. Safety First: Park on a level surface, engage the parking brake, and chock the wheels you are not lifting.
2. Remove the Wheel: Loosen lug nuts, jack up the truck, secure it on jack stands, and remove the wheel.
3. Remove the Brake Pads: Remove the caliper bolts, carefully lift the caliper off the rotor (do not let it hang by the brake hose—support it with a wire or bungee), and remove the pads.
4. De-glaze the Pads: Using 120-200 grit sandpaper on a flat block, sand the surface of the brake pads until the shiny glaze is removed and you see fresh, uniform friction material. Clean the pads thoroughly with brake cleaner to remove all dust.
5. Prepare the Rotors: If the rotors are not deeply grooved or cracked, you can de-glaze them as well. Use a brake rotor hone or sand the rotor surface in a cross-hatch pattern with the same grit sandpaper while the rotor is still on the vehicle. Clean meticulously with brake cleaner.
6. Reassemble: Reinstall the pads, caliper, and wheel. Torque the caliper bolts and lug nuts to factory specifications.
7. Bed-in the Brakes: This is critical. Find a safe, empty road. Accelerate to 45 mph and apply moderate brake pressure to slow to 10 mph. Repeat this 5-8 times without coming to a complete stop. Then, drive for several minutes without using the brakes to let them cool. This process transfers a fresh layer of pad material onto the rotor, restoring proper friction.

Correcting Towing-Related Overheating:

1. Use Tow/Haul Mode: Always engage Tow/Haul mode when towing. This is not optional for mountain driving.
2. Set Trailer Brake Gain: Properly set the brake gain for your specific trailer load using the manual control on the dash. The system should apply the trailer brakes in sync with your truck's brakes.
3. Use Engine Braking: On long descents, use the sequential shift mode to select a lower gear (e.g., 3rd or 4th), allowing engine compression to slow the vehicle and reduce brake reliance.
4. Consider an Aftermarket Controller: Some owners prefer standalone controllers. Research is required, as the integrated system is complex. One owner investigating this said: "I hate the brake controller and want my old Redarc brake controller. After talking to Redarc they think the controller is just like any other and can be disconnected and theirs can be plugged in." — jay3253. This is a advanced modification.

Parts and Tools Needed

• For TSB Repair: The updated Toyota Genuine front brake pad and shim kit. The part number will be specified in the TSB and ordered by the dealer.
• For DIY Pad Service/De-glazing:
  • Jack and Jack Stands
  • Lug Nut Wrench
  • Socket Set (for caliper bolts)
  • C-Clamp or Brake Caliper Piston Tool
  • 120-200 Grit Sandpaper and Sanding Block
  • Brake Parts Cleaner (non-chlorinated)
  • Torque Wrench
  • Gloves and Safety Glasses
• For Towing: No parts needed, but proper use of the integrated Trailer Brake Controller and Tow/Haul mode is essential.

Real Owner Costs

The cost to address these issues varies dramatically between a covered TSB repair and an out-of-pocket fix.

• TSB Squeak Repair: If your vehicle is within the 3-year/36,000-mile basic warranty or potentially a longer "goodwill" period, and the pads are not excessively worn, this repair should be performed at no cost to you. The dealer handles parts and labor under the warranty-covered TSB.
• Out-of-Pocket Brake Service: If you are outside of warranty or need pads replaced for glazing/wear, costs rise. A dealer replacement of front brake pads (and potentially resurfacing rotors) can easily cost $500-$800 in parts and labor. One owner facing a different but similarly priced repair noted: "The good news is that my dealer can get the part delivered and installed tomorrow, but the painful part is that it's an $800 repair." — Ike582. This gives a realistic benchmark for dealership brake work.
• DIY Cost: If you de-glaze your own pads and rotors, your cost is essentially $0 aside from the sandpaper and brake cleaner (under $20). If you need to replace the pads yourself, a set of high-quality aftermarket front brake pads can range from $100 to $250. This represents significant savings over dealer service.

Prevention

Preventing brake squeak on a new vehicle is difficult, but being aware of the TSB allows for early intervention. For preventing performance issues, technique is key. Always use Tow/Haul mode when towing. This single action is the most effective way to prevent brake overheating and fade by optimizing the integrated trailer brake controller and transmission behavior. On long downhill grades, downshift manually to use engine braking. Avoid "riding" the brake pedal; instead, use firm, intermittent applications. Finally, ensure your trailer's brakes are properly adjusted and functioning; they should be doing a significant portion of the work when descending.

What Owners Say

Real experiences from TOYOTA owners:

Owner Experiences

"I got the LCLC trim it hit the sweet spot on features and tech. No major mechanical issues at all for me just the screeching front brakes that got fixed under a recent tsb." — jmqb1 (source)

"If it were mine............I'd check the rotors for grooving and if they aren't damaged, I'd just drive with the pads like they are. If you notice poor braking during normal driving, I'd replace the pads at that time." — EOD Guy (source)

"Coming over Sonora Pass, dropping 3000 ft in 9 miles, hauling a teardrop camping trailer my brakes overheated and started to fade. I had electric trailer brakes but did not use the Tow/Haul feature (moronic ignorance)." — PDundon (source)

Pro Tips from Owners

💡 "Yeah man, ya gotta make sure to engine brake in this situation. This could have been really bad, my friend." — URJ200 (source)

Real Repair Costs

"The good news is that my dealer can get the part delivered and installed tomorrow, but the painful part is that it's an $800 repair. Needless to say I'll be more careful next time." — Ike582 (source)

"I knew it was going to be an expensive replacement, but at least it didn't scratch my paint. The good news is that my dealer can get the part delivered and installed tomorrow, but the painful part is that it's an $800 repair." — Ike582 (source)

FAQ

Q: How long does it take to fix the squeaky brake TSB? A: The repair itself typically takes a dealership technician 1-2 hours. However, you should plan for half a day at the dealership to account for check-in, vehicle inspection, the repair, and a test drive. Always schedule an appointment and mention the TSB upfront to ensure they have the updated parts in stock.

Q: Can I drive with squeaky or glazed brakes? A: You can drive with the TSB-related squeak, as it is a noise nuisance and not a safety failure. However, it is advisable to have it addressed. Driving with severely glazed pads is riskier, as stopping distances will be increased. As one owner advised, if the rotors aren't damaged, you can drive but should be cautious and plan to fix the issue soon: "If you notice poor braking during normal driving, I'd replace the pads at that time."

Q: Is this a common issue on the 2020 Land Cruiser? A: Yes, based on owner forum discussions, the front brake squeak is a very common complaint, so much so that Toyota issued a specific Technical Service Bulletin for it. Overheating issues are less about a vehicle defect and more common in scenarios involving heavy towing, especially by owners unfamiliar with the full capabilities of the Tow/Haul system.

Q: DIY vs mechanic - what's recommended for brake pad replacement? A: For the TSB-related squeak, a dealership visit is mandatory to get the updated parts under warranty. For general pad replacement or de-glazing due to overheating, this is a classic DIY job if you have basic mechanical skills, tools, and follow safety procedures. The savings are substantial ($500+). If you are uncomfortable working on critical safety components, a trusted independent shop will be cheaper than the dealer.

Q: What if my dealer doesn't know about the TSB? A: This happens, as reported by owners. Be prepared with the TSB number (BR009-21 is a known number, but confirm the latest). Politely ask the service advisor to look it up in the Toyota Technical Information System (TIS). If they are uncooperative, consider calling another dealership.

Q: Will aftermarket brake pads fix the squeak? A: Very likely, yes. Most aftermarket premium pad compounds are designed to be quieter than aggressive OE pads. If you are out of warranty and facing a paid repair, installing a reputable aftermarket ceramic or low-dust pad kit is an excellent solution that may not only eliminate the squeak but also reduce brake dust.