2010-2017 Lincoln Navigator Front vs Rear Brakes: What Wears First and What to Replace

By Core Brake Parts Tech Team — Circleville, OH warehouse

On a 2010-2017 Lincoln Navigator the front brakes almost always wear out first, usually by a wide margin, because the front axle does most of the stopping on a heavy, nose-down SUV. The rear pads and rotors last longer but are not maintenance-free, and towing, hill work and a sticking parking brake can close the gap quickly. The smart move is to measure both axles at every tire rotation and replace pads and rotors as an axle set, front and rear together when the numbers say so.

How the Navigator's Brakes Are Split Front to Rear

Every 2010-2017 Navigator uses disc brakes at all four wheels with four-wheel ABS. Ford's owner's guide tells drivers to apply continuous, firm force in an emergency and let the ABS modulate pressure, and notes that pedal pulsation and pump noise during a hard stop are normal. Up front you have large rotors and calipers; at the rear you have a smaller disc setup plus the parking brake.

The parking brake on these years is mechanical and pedal-applied: you press the pedal down to set it and pull the release lever at the lower left of the instrument panel. Ford notes that the parking brake applies only the rear brakes, which is one reason rear brake condition matters even though the rear does less of the everyday stopping.

Two engine eras share this brake story. The earlier trucks use the 5.4L V8, and the later trucks use the 3.5L EcoBoost V6. The EcoBoost-era owner's manual also describes Hill Start Assist, which briefly holds the truck so it does not roll back when you pull away on a slope.

Why the Front Brakes Wear First

When you brake, weight shifts forward onto the front tires. That extra load gives the front tires more grip, so the brake system is designed to send most of the clamping force to the front axle. The Motorist Assurance Program puts the front share at about 70 percent of braking force on a typical vehicle, which leaves roughly 30 percent for the rear.

On a Navigator that effect is exaggerated. It is a tall, heavy, body-on-frame SUV, and a full load of passengers and cargo pushes even more work onto the front brakes during a hard stop. Expect front pads to need replacement noticeably sooner than the rears, and expect the front rotors to be the ones that develop a pulsation first if they are overheated.

When the Rear Brakes Wear Faster Than Expected

The 70/30 split is a starting point, not a promise. Several things push more work, or more heat, onto a Navigator's rear brakes:

• Towing. The 2011 owner's guide lists maximum trailer weights up to 9,000 lb for a two-wheel-drive Navigator with the optional tow package. A heavy trailer and a loaded third row keep the rear axle planted, and the rear brakes pick up more of the load. Ford also warns that on long or steep grades you should shift to a lower gear rather than apply the brakes continuously, because they can overheat and become less effective.
• Driving with the parking brake partly applied. If the pedal is not fully released, the rear brakes drag. Ford notes that a brake warning lamp that stays on after the parking brake is fully released means the brakes may not be working properly.
• Seized slide pins or a sticking caliper. Road salt is hard on rear hardware because it sees less heat and less movement. A frozen slide pin often shows up as one pad worn to the backing plate while its partner still looks new.
• Stability and traction control. These systems work by braking individual wheels, and on a rear-drive-based SUV that often includes the rear brakes.

The practical takeaway: never assume the rears are fine because the fronts were just done. Measure them.

Symptoms and How to Tell Which End Is Worn

Ford's own guidance is simple. Occasional brake noise is normal, especially first thing in the morning or in wet, salty or dusty conditions. A metal-to-metal sound, continuous grinding or continuous squeal while braking means the linings may be worn out. A continuous vibration or shudder in the steering wheel while braking also calls for an inspection.

• Shake in the steering wheel points to the front rotors. Front rotor runout or uneven pad deposits are felt through the steering.
• Pulsation felt in the seat or pedal but not the wheel is more often a rear rotor.
• Grinding from one corner means that pad is down to its backing plate. Stop driving on it; each mile is cutting into the rotor.
• Parking brake that lets the truck creep on a grade points to the rear. Ford says if the parking brake cannot hold the weight of the vehicle, it may need service or the vehicle may be overloaded.
• Soft or long pedal, or a low brake fluid warning is a hydraulic problem, not a pad problem. See the recall note below.

To confirm, pull the wheels at the next tire rotation. Ford's normal maintenance schedule already calls for inspecting the brake pads, rotors, hoses and parking brake at every oil change interval, so it costs little extra to measure pad thickness on both axles and check the rotors for scoring, heat spots and a lip at the outer edge.

What to Replace, and What to Replace With It

Brakes are replaced by the axle, never one wheel. Both corners on an axle get new pads at the same time, and both rotors on that axle get replaced together so braking stays even side to side.

• Front job only: front pads and front rotors, new abutment clips and fresh slide pin grease. This is the most common service on these trucks.
• Rear job only: rear pads and rotors, plus a look at the parking brake. Check that it releases fully and holds on a grade after the work.
• Both axles: if the rear pads are close to their wear limit when you are doing the fronts, it is cheaper to do both in one visit. A matched 2010-2017 Navigator front and rear brake kit puts new pads and rotors on all four corners at once.

Also worth doing at the same time: fresh brake hardware kits for the clips and pins, and a look at the rubber brake hoses for cracking or swelling. If a caliper is seized or leaking, replace both on that axle with replacement brake calipers. For daily-driven family haulers, ceramic brake pads keep dust and noise down; for trucks that tow often, choose a pad compound rated for heavier duty.

Fluid matters too. The 2011 owner's guide calls for Motorcraft High Performance DOT 3 fluid meeting WSS-M6C62-A or WSS-M6C65-A1. The 2016 manual allows DOT 3 or DOT 4 Low Viscosity High Performance fluid meeting WSS-M6C65-A1 or WSS-M6C65-A2, and tells you to check the reservoir cap for the correct fluid. Only use fluid from a sealed container. Ford also notes the reservoir level drops slowly as the brakes wear and rises when brake components are replaced, so do not top it off on worn pads or it may overflow when you push the pistons back.

Recall Check Before You Blame the Pads (2016-2017)

If a 2016 or 2017 Navigator has a changing pedal feel, longer pedal travel, or needs more effort to stop, check recall status before buying pads. NHTSA campaign 22V150000 covers certain 2016-2017 Navigators with the 3.5L EcoBoost: the master cylinder may leak fluid from the front wheel circuit into the brake booster, reducing front brake function. Campaign 25V236000 covers certain 2017-2018 trucks for the same condition. The dealer remedy is a new master cylinder, plus a booster if the master cylinder is leaking, at no cost. Run your VIN on nhtsa.gov before any brake work on these years. If the recall does not apply, our master cylinders and brake boosters cover the hydraulic side.

How Hard Is the Job?

A pad and rotor job on either axle is a reasonable driveway project for someone with a good floor jack, jack stands rated for a full-size SUV, a torque wrench and a caliper piston tool. The rotors are heavy, so plan for that when handling them. Torque the caliper bracket bolts and lug nuts to the values in the factory service manual, bed in the new pads with a series of moderate stops, and pump the pedal before you move the truck. The rear is slightly more involved because of the parking brake; confirm it releases fully and holds on a slope before you call the job done.

Frequently Asked Questions

Should I replace front and rear brakes on my Navigator at the same time?

Only if both are worn. The front usually needs it first. If the rears are close to their limit when you do the fronts, doing all four in one visit saves a second teardown.

How often should the brakes be inspected on a 2010-2017 Navigator?

Ford's normal maintenance schedule calls for inspecting the brake pads, rotors, hoses and parking brake at every oil change interval.

Why does my steering wheel shake when I brake?

That points to the front rotors. Ford says continuous vibration or shudder in the steering wheel while braking should be inspected. Replace the front rotors as a pair, along with the pads.

What brake fluid does a 2015-2017 Navigator use?

The 2016 owner's manual allows DOT 3 or DOT 4 Low Viscosity High Performance fluid meeting WSS-M6C65-A1 or WSS-M6C65-A2 and says to check the reservoir cap for the correct type.

Does the parking brake use the front or rear brakes?

Only the rear. That is why a parking brake that will not hold on a hill is a rear brake inspection item.

Sources

1. Ford 2011 Lincoln Navigator Owner's Guide - four-wheel ABS, brake noise guidance, parking brake applies only the rear brakes, DOT 3 fluid spec, trailer weights, downhill braking warning
2. Ford 2016 Lincoln Navigator Owner's Manual - DOT 3 / DOT 4 LV fluid specs, parking brake operation, Hill Start Assist, brake inspection at every oil change
3. Motorist Assurance Program - Which Brakes Go Bad First - front brakes handle about 70 percent of braking force
4. NHTSA recall data - 2016 Lincoln Navigator - campaign 22V150000, master cylinder leak into booster
5. NHTSA recall data - 2017 Lincoln Navigator - campaign 25V236000 expansion