ABS ring on Nissan Note: device, diagnostics and repair

ABS (anti-lock brake system) ring on Nissan Note - this is a small but critical element on which the correct operation of the entire braking system depends. Many owners encounter the error ABS on the dashboard, not suspecting that the reason may lie in a damaged or dirty sensor ring. Unlike more visible components such as brake pads or rotors, the ABS ring remains an "invisible hero" until it fails.

In this article we will understand how the ABS ring works on Nissan Note (including models E11 And E12), what symptoms indicate its malfunction, and whether it is possible to cope with the replacement yourself. We will pay special attention typical mistakes in diagnosticswhich lead to unnecessary waste of time and money. If you see the icon on the panel ABS or VSA (stability control system), but the brakes work fine - most likely the problem is in the sensor or its ring.

What is an ABS ring and how does it work on a Nissan Note

ABS ring (also called impulse rotor or master disk) is a toothed metal ring mounted on the wheel hub or drive shaft. Its main task is to generate impulses when the wheel rotates, which are read by the ABS sensor. This data is used by the control unit to calculate the speed of each wheel and prevent locking when braking.

On Nissan Note ABS rings may differ depending on the year of manufacture and drive type:

• 🔄 Front-wheel drive models (most Note E11/E12): rings are installed on front wheel hubs, less often - on the rear (if there is ABS on all wheels).
• 🚗 All-wheel drive versions (For example, Note 1.5 dCi 4WD): rings are on all four wheels, plus there may be an additional sensor on the transfer case.
• 🔧 Material: usually steel or ferrite (magnetic alloy), less often plastic with metal inserts.

As the wheel rotates, the teeth of the ring pass by the ABS sensor, creating an alternating magnetic field. The sensor converts these vibrations into electrical signals that enter the ABS control unit (usually located under the hood or in the cabin near the pedal assembly). If the signal disappears or becomes unstable, the system turns off the ABS and lights up the malfunction lamp.

Signs of a faulty ABS ring on a Nissan Note

The main symptom of an ABS ring problem is burning lamp ABS on the dashboard. However, this signal may also indicate other faults (sensor, wiring, control unit). To accurately identify the culprit, pay attention to the accompanying signs:

• ⚠️ The ABS light comes on at speeds above 10–15 km/h and doesn't go out. This is a typical symptom when the sensor cannot read the signal from the ring.
• 🔊 Creaking or extraneous noise from the hub when driving. Sometimes a damaged ring rubs against the sensor or protection.
• 🛑 ABS works for no reason (for example, on dry asphalt with light braking). This may mean that the sensor is receiving false signals due to a damaged ring.
• 📉 Sports car braking mode: If ABS is turned off, the braking distance on wet or slippery roads increases and the wheels lock even when you press the pedal lightly.

It is important to distinguish a ring malfunction from problems with the sensor itself. For example, if the ABS light only comes on when driving over bumps, it is most likely sensor wiring is damaged or its fastening is loose. And if the error appears constantly and is accompanied by a squeaking sound, the ring is to blame.

⚠️ Attention: If on Nissan Note lamps light up at the same time ABS And VSA, and there is an error in the diagnostic system C1130 (failure of the wheel speed sensor), in 80% of cases the problem is in the ring or sensor. Don't rush to change the ABS unit - check the mechanical part first!

Diagnostics of the ABS ring: step-by-step instructions

Before removing the wheel or disassembling the hub, perform preliminary diagnostics. This will save time and help more accurately determine the cause of the problem.

Check error codes with a scanner (ELM327 or dealer Consult)

Inspect the ABS sensor for damage and corrosion.

Check the sensor resistance with a multimeter (normal: 800–1400 Ohm)

Spin the wheel manually and listen for extraneous sounds

Inspect the ring for chips, rust or deformation -->

For in-depth diagnostics, follow these steps:

1. Read the error codes. Connect a diagnostic scanner (for example, Launch CReader or ELM327) and find errors related to ABS. Typical codes for Nissan Note:
   • C1130 — malfunction of the wheel speed sensor (maybe the ring or the sensor itself).
   • C1145 — ABS sensor circuit open.
   • U1000 — loss of connection with the ABS unit (less often due to the ring, more often to the wiring).
2. Check the sensor resistance. Disconnect the sensor connector and measure the resistance between the contacts. Normal value for Nissan Note — 800–1400 Ohm. If the resistance approaches zero or infinity, the sensor is faulty.
3. Visually inspect the ring. To do this you will have to remove the wheel and possibly the brake caliper. Search:
   • 🔍 Chips or cracks on the teeth of the ring.
   • 🧲 Rust (especially on ferrite rings).
   • 🔄 Deformation (the ring must be perfectly round).

Check the gap between the sensor and the ring. It must be within 0.5–1.5 mm. If the gap is larger, the signal will be weak; if less, the sensor may cling to the ring.

If the ring is damaged, it must be replaced. In some cases, rust removal helps (for example, WD-40 + metal brush), but this is a temporary solution. On Nissan Note With mileage of more than 150 thousand km, the rings often wear out to the point where replacement is the only option.

How to check the ABS sensor without a scanner?

If you do not have diagnostic equipment, you can test the sensor by ear. Jack up the wheel, turn on the ignition and spin the wheel by hand. A working sensor should emit a slight crackling sound (this triggers the ABS relay). If there is no sound, the sensor or ring is faulty.

Replacing ABS Ring on Nissan Note: Step by Step Process

Replacing the ABS ring with Nissan Note - a task of medium complexity. If you have experience working with suspension and braking systems, you can handle it yourself. Otherwise, it is better to contact the service, as errors during assembly can lead to uneven wear of brake pads or even brake failure.

To work you will need:

• 🔧 A set of sockets and keys (especially 17 mm And 19 mm for the hub nut).
• 🔨 Wheel bearing remover (if the ring is integrated into the hub).
• 🧲 Torque wrench (for proper tightening of the hub nut).
• 🛠️ New ABS ring (item number depends on year and configuration, for example, 40520-4M000 for front ring Note E11).

Step-by-step instructions (using the example of the front wheel):

1. Remove the wheel and brake caliper. Unscrew the two caliper mounting bolts (usually 14 mm), hang the caliper on a wire to avoid damaging the brake hose.
2. Remove the brake disc. It is attached to the hub with two screws (an impact driver may be required as the screws tend to stick).
3. Unscrew the hub nut. On Nissan Note it is tightened with a large torque (about 200 Nm), so use a lever or air tool. Do not use an impact wrench - this may damage the bearing!
4. Remove the hub. If the ABS ring is removable, it will remain on the hub. If it’s integrated, you’ll have to change the hub assembly.
5. Install a new ring. Place it on the hub (or replace the entire hub), observing the direction (the teeth should face the sensor).
6. Reassemble everything in reverse order. Tighten the hub nut to a torque 180–220 Nm (see the manual for your model for exact values).

⚠️ Attention: After replacing the ABS ring, be sure to reset errors using a scanner! Even if the lamp ABS goes out on its own, codes may remain in the unit’s memory that will re-activate the malfunction signal the next time the engine is started.

Repair cost: prices for spare parts and labor

The cost of repair depends on what exactly needs to be replaced: the ring itself, the sensor or the hub assembly. Below is the estimated cost for Nissan Note (as of 2026):

Detail	Article (example)	Cost, ₽	Notes
ABS ring (front)	40520-4M000	1 200–2 500	Often sold only complete with hub
ABS sensor (front)	40521-4M000	1 500–3 000	May vary for models with VSA
Hub assembly with ABS ring	40530-JM00A	4 000–7 000	Includes bearing and ring
Replacing the ABS ring (work)	—	2 000–4 000	Without taking into account diagnostics
Replacing the hub assembly (work)	—	3 000–5 000	Includes brake disc removal/installation

If you decide to change parts yourself, pay attention to quality of spare parts. There are many counterfeits of original items on the market Nissan. It is better to buy from official dealers or trusted suppliers (for example, Denso, NTN, SKF for bearings).

The cost of diagnostics in the service is usually 1 000–1 500 ₽. If you are unsure of the cause of the problem, it is better to pay for a diagnosis first rather than buying parts at random.

Common mistakes when replacing an ABS ring and how to avoid them

Even experienced car owners sometimes make mistakes when working with the ABS system. Here are the most common mistakes and ways to avoid them:

• 🔧 Incorrect tightening of the hub nut. If you overtighten, the bearing will quickly fail; If you don’t tighten it enough, the wheel will “beat”. Always use torque wrench!
• 🧲 Installing the ring on the wrong side. The teeth should be directed towards the sensor. If the ring is reversed, the ABS system will not work.
• 🔌 Damage to the sensor wiring. When removing/installing a caliper or hub, it is easy to touch the wires. Check the circuit with a multimeter after assembly.
• 🚗 Ignoring errors after replacement. If the fault codes are not reset, the lamp ABS may burn even after successful repair.

Another common mistake is buying an incompatible ring. For example, rings for front wheel drive Note E11 not suitable for all-wheel drive version. Always check the spare parts catalog using the vehicle's VIN code.

What happens if you drive with a faulty ABS ring?

If you ignore the problem, over time:

1. Wear on brake pads and discs will increase due to uneven braking.

2. On a wet or icy road, braking distance will increase by 20–30%.

3. System VSA (if equipped) will turn off, which will worsen cornering control.

4. In some cases, a faulty sensor may cause false activation of the airbags (due to errors in the control unit).

Alternative solutions: repair vs. replacement

Replacing the ABS ring is not always the only solution. In some cases, you can get by with repairs or temporary measures:

• 🔧 Cleaning the ring. If the problem is rust or dirt, try cleaning the ring with a wire brush and treating WD-40 or LIQUI MOLY Kupfer-Spray (copper grease). This can help for 10–20 thousand km.
• 🧲 Sensor repair. Sometimes the ABS sensor fails due to a broken wire or connector. If the sensor resistance is normal, you can resolder the contacts.
• 🔄 Replacing the hub assembly. If the ring is not removable, it is cheaper to buy a new hub with bearing than to try to restore the old ring.

However, remember: temporary measures do not completely solve the problem. If the ring already has mechanical damage (chips, cracks), it must be replaced. The same applies to sensors with unstable resistance - repairing the wiring may help for a short time, but sooner or later you will have to install a new part.

On Nissan Note with a mileage of more than 200 thousand km, not only the rings often fail, but also wheel bearings. In this case, it is advisable to replace the hub assembly, since separate repairs will cost more.

FAQ: Frequently asked questions about the ABS ring on Nissan Note

Is it possible to drive with the ABS light on?

Yes, but with caution. The brakes will work, but will not have anti-lock braking system. On a dry road this is not critical, but on a wet or icy road the braking distance will increase and the wheels may lock. The stability control system will also turn off (VSA), if it is included in your configuration.

How to distinguish a faulty ABS ring from a problem with the sensor?

If the sensor is faulty, the ABS light usually comes on immediately after starting the engine or when driving over bumps. If the problem is in the ring, the error appears at speed (usually above 10–15 km/h) and may be accompanied by a squeaking sound. Diagnostics with a scanner will show the exact cause.

How much does it cost to replace an ABS ring at a service center?

The cost of replacing the ring is from 2,000 to 4,000 rubles per wheel. If the hub assembly needs to be replaced, the price will increase to 5,000–7,000 rubles. Diagnostics will cost 1,000–1,500 rubles.

Is it possible to clean the ABS ring without removing the hub?

Partially yes. You can treat the ring with cleaner (WD-40) and wipe with a brush, but complete cleaning requires removing the brake disc and caliper. If the ring is very rusty, cleaning will not help - only replacement.

Which ABS rings fit Nissan Note E12?

For Nissan Note E12 (2012–2020) original ring numbers:

• Front: 40520-JM00A (often comes complete with a hub 40530-JM00A).
• Rear: 40525-JM00A (if there is ABS on the rear axle).

Analogues: Febi, TRW, SKF (but check compatibility by VIN).