Do-it-yourself replacement of rear pads on a Nissan X-Trail T31: a detailed guide

Replacing rear brake pads with Nissan X-Trail T31 - a task that even a novice car owner can handle with proper preparation. This crossover, produced from 2007 to 2013, featured rear disc brakes on most trims, making servicing easier than drum systems. However, there are nuances: from the features of mounting the caliper to the need for correct installation of the guides.

In this article you will find not only step-by-step instructions with photos, but also answers to key questions: how to determine pad wear, what tools are needed, and why the brake may squeak after replacement. We will also analyze common mistakes that cause new pads to wear out 2-3 times faster, and give recommendations on choosing spare parts for maximum service life.

Signs of rear pad wear: when is it time to change

Rear brake pads on X-Trail T31 wear out slower than the front ones (on average by 30–50%), but their condition cannot be ignored. The main symptoms indicating the need for replacement:

• 🔊 Creaking or whistling when braking - appears due to a wear indicator (metal plate) that scratches the disc when the friction layer is critically abraded.
• 📏 Reducing pad thickness below 2–3 mm (the norm for new ones is 8–12 mm). You can check through the caliper inspection window or after removing the wheel.
• 🚗 Car withdrawal to the side when braking - may indicate uneven pad wear or caliper jamming.
• 💨 Increased dust on the rear wheel rims - a sign of destruction of the friction material.

On X-Trail T31 with the system ESP And ABS Worn rear pads can cause false alarms in the electronics. For example, when braking sharply, the car begins to “steer” on its own. This is due to the difference in braking force between the axles.

⚠️ Attention: If the pads appear cracked or chipped, they must be replaced immediately - even if they are thick enough. The destruction of the friction material leads to damage to the brake disc.

Preparing for replacement: tools and spare parts

To replace the rear pads with Nissan X-Trail T31 you will need:

Category	Name	Notes
Tools	Jack and stops	Be sure to use wheel chocks for fixing the front wheels.
Tools	14 mm socket wrench	To unscrew the caliper guides.
Tools	5 mm hexagon	Needed to remove the caliper on some modifications.
Consumables	DOT-4 brake fluid	May be needed to bleed the system after replacement.
Consumables	Copper Guide Grease	Use only high temperature lubricant (eg Slipkote 220-R DBC).

When choosing pads, pay attention to catalog numbers:

• 📋 Original pads: Nissan 40520-4M000 (for versions with ABS) or Nissan 40520-4M025 (without ABS).
• 🔧 Analogues: Ferodo FDB1886, TRW GDB1886, Brembo P68054 - proven brands with good reviews.

On the X-Trail T31 with a 2.5L engine (QR25DE), the rear calipers may differ from the 2.0L versions (MR20DE). Please check the VIN code before purchasing!

Step-by-step instructions: removing old pads

Before starting work disconnect the carby removing the negative terminal from the battery. This will prevent accidental activation of the electric parking brake (if electronic).

1. Jack up the rear of the car and remove the wheel. Use 19 mm wheel wrench for unscrewing nuts.

2. Clean the caliper and guides remove dirt with a wire brush. On X-Trail T31 Rust often accumulates on bolts - treat them WD-40 10–15 minutes before unscrewing.

3. Remove the caliper:

   • Unscrew the two caliper mounting bolts (usually by 14 mm).
   • Carefully hang the caliper on a wire or rope to the spring - do not allow sagging on the brake hose!

Remove old pads. On X-Trail T31 they are fixed with spring clips - pry them off with a screwdriver.

Clean the pad seats from rust |

Check the condition of the brake disc (there are no grooves >0.5 mm deep)|

Lubricate the caliper guides with high temperature grease|

Make sure that the caliper piston moves freely (not stuck) -->

⚠️ Attention: If the caliper piston does not press back (for example, after pressing the brake pedal), this is a sign of corrosion or damage to the seals. In this case, the caliper must be disassembled and cleaned or replaced.

Installation of new pads and assembly

Before installing new pads be sure to press down the caliper piston. On X-Trail T31 this is done with a special tool - expansion wrench or pliers. If the piston does not press in, check:

• 🔧 Cleanliness of the piston surface (rust or dirt blocks movement).
• 🔩 Condition of the rubber boot (cracks or tears will lead to moisture ingress).
• 💧 Brake fluid level in the reservoir (when the piston is retracted, the fluid rises - if necessary, pump it out with a syringe).

Next, follow the algorithm:

1. Apply a thin layer of anti-squeak paste on the back of the new pads (not on the friction surface!).

2. Reinstall the pads in reverse order, making sure the spring clips snap into place.

3. Attach the caliper and tighten the bolts firmly 25–30 Nm (do not overtighten!).

4. Check the brake pedal travel - it should be elastic, without dips. If the pedal is “soft”, bleed the system.

Common mistakes and how to avoid them

Even experienced car owners make mistakes when replacing rear pads with X-Trail T31. Here are the most common:

• 🛑 Ignoring the condition of the brake discs. If the disc has deep grooves (more than 0.5 mm), the new pads will wear out quickly. The discs need to be sharpened or replaced.
• 🧴 Using the wrong lubricant. Ordinary lithol or graphite is destroyed at high temperatures. Use only copper or ceramic lubricants
• 🔧 Improperly tightened guides. Too little tightening will cause vibrations, too much will cause the caliper to jam.
• 🚗 Forgetting to bleed the brakes after replacement. If the brake pedal becomes “wobbly”, there is air left in the system.

Another common problem is squeaking noise after replacing pads. Reasons:

• Low quality friction material (especially with cheap analogues).
• Lack of anti-squeak paste on the back of the pads.
• Corrosion on the caliper seats (need to be cleaned with a wire brush).

What should I do if the ABS light comes on after replacing the pads?

This may indicate:

1) Incorrect installation of the ABS sensor (check the gap between the sensor and the ring gear).

2) Damage to the sensor wire (inspect for chafing).

3) Malfunction of the ABS unit (diagnosis with a scanner is required, for example, Launch X431).

If the light comes on immediately after replacement, first check that the sensor is fastened and its contacts are clean.

Brake system maintenance after replacement

In order for new pads to last as long as possible (on average 30–50 thousand km on X-Trail T31), follow the recommendations:

• 📅 Check the thickness of the pads every 10 thousand km or every six months.
• 🚿 Wash your brakes special cleaners (for example, Liqui Moly Bremsen-Reiniger) every 20 thousand km.
• 🔧 Lubricate the guides calipers once a year (even if you don’t change the pads).
• 🚗 Avoid holding the brake pedal for long periods of time at traffic lights - this leads to overheating and deformation of the pads.

If you notice that your pads are wearing out unevenly (for example, the inner one is erased faster than the outer one), this is a sign:

• The caliper guides are jammed.
• Wear of rubber piston seals.
• Brake disc deformation.

FAQ: answers to frequently asked questions

Is it possible to replace only the rear pads without touching the front ones?

Yes, but only if the front pads are in good condition (thickness >5 mm). However, remember that The brake system must be serviced comprehensively. If the rear pads are worn, the front ones usually need attention too. On X-Trail T31 It is recommended to check all pads and discs every 20–30 thousand km.

Do I need to bleed the brakes after replacing the rear pads?

Pumping is only needed in two cases:

1. If you have disconnected the brake hose from the caliper.
2. If the brake pedal becomes “soft” after replacement (a sign of air ingress).

On X-Trail T31 with ABS, bleeding is best done using a scanner to activate the anti-lock braking system valves.

Which pads are better to choose: original or analogues?

Original pads Nissan 40520-4M000 provide better compatibility with the ABS and ESP systems, but are more expensive (from 3,500 rubles per set). Analogues (Ferodo, TRW) is cheaper (from 1,800 rubles), but the first 500–1,000 km can creak. For an aggressive driving style it is better to choose ceramic pads (eg Brembo Ceramic) - they generate less dust and last longer.

What to do if after replacing the pads the car brakes jerkily?

Jerks when braking X-Trail T31 usually caused by:

• Uneven running-in of the pads (you need to drive 200–300 km in a gentle mode).
• Deformation of the brake disc (check the runout with an indicator).
• Caliper jamming (disassemble and lubricate the guides).

If the problem persists, check wheel bearing condition — its play can also cause vibrations.

How long does it take to replace rear pads on an X-Trail T31?

If you have the tools and experience, the work takes 1.5–2 hours on both wheels. For beginners, it may take up to 3-4 hours, especially if the caliper bolts are rusted. Tip: If you've never changed pads yourself, check them out first. video instructions for your modification (with or without ABS).