Electrical · Tooting SW17

Tooting ABS Sensor Replacement, 18 Minutes to Hackbridge

Our workshop is about 18 minutes from Tooting Broadway, out along Mitcham Road and through Mitcham to Hackbridge. We read the ABS codes, test the circuit and find the real cause, and ABS sensor replacement starts from £89.

Get an instant price Call 020 4629 9469

★★★★★ 4.9/5 from 87 Google reviews
~18 min from Tooting
Mon–Sat 8am–8pm

Audi SQ5 in for brake and wheel-speed work at KITH Cars Garage & Bodyworks, Hackbridge

ABS Sensor Replacement for Tooting drivers

Hospital traffic, red routes and emergency braking in Tooting

Roads around St George's Hospital and Blackshaw Road are busy at all hours with ambulances, drop-offs and staff, and Mitcham Road carries buses and shoppers east from Tooting Broadway. On the A24 red route, bus lanes and pedestrians add to it. These are roads where you may have to stop suddenly, and ABS keeps the wheels turning so you can steer while you brake. When a wheel speed sensor fails, ABS and stability control both switch off, and on a wet road the difference is real.

Tooting's cars take a lot of punishment. Tight Victorian terraces in Lower Tooting mean parking close to kerbs, and a knock can damage a sensor or its wiring. Taxis and private-hire cars working the Broadway get through brakes quickly, and every pad or disc change is a chance for an old sensor to be disturbed. Tooting Bec Road across the common past Tooting Bec Lido is 20mph but still sees plenty of hard braking at the crossings. Over time, any of these can leave a car with an ABS light that won't go away.

We start by reading the ABS module for the wheel and the fault type, then check live wheel speeds on a road test or ramp. We test the sensor, wiring and connector, and look at the reluctor ring or bearing encoder and the bearing itself. You'll get a written quote before any work starts, and if a wiring repair will fix it, we'll tell you.

From Tooting Broadway, take Mitcham Road east past Tooting station into Mitcham, through Figges Marsh and the one-way system to the Cricket Green, then Cranmer Road and Carshalton Road to Hackbridge, about 5 miles. With only the ABS light on, most cars are fine to drive gently. If it's parked in a controlled zone and hard to move, we can arrange collection. Repairs carry our 3-month workmanship warranty.

Electrical

ABS Sensor Replacement: what’s involved

Each wheel has a speed sensor that reads a toothed or magnetic ring turning with the hub or driveshaft. The ABS module constantly compares the four signals. If one wheel slows too quickly under braking, the system releases and reapplies that brake to stop it locking. The same signals feed traction control, stability control and often the speedometer, hill-hold and tyre pressure warning.

Older cars use passive sensors that generate their own signal. Most modern cars use active sensors, which are powered by the ABS module and often read a magnetic encoder built into the wheel bearing seal. Sensors sit right next to the brakes, exposed to heat, water, salt and brake dust, so corrosion, damaged wiring and failed connectors are common. When a signal drops out, the system switches ABS and stability control off and lights the warning. Your normal brakes still work.

From £89Written quote first

45 minutes–2 hoursTypical time in the workshop

3 monthsWorkmanship warranty

4.9★87 Google reviews

Signs of an ABS sensor fault

ABS warning light on

A steady ABS light means the system has switched itself off. Normal braking still works, but the wheels can lock under heavy braking.

Traction and stability lights too

Because they rely on the same wheel speed signals, the traction control or ESP light usually comes on with the ABS light.

Light comes and goes

An intermittent warning, often after bumps, in wet weather or at a certain speed, usually points to damaged wiring, a loose connector or a corroded sensor.

ABS pulsing at low speed

If the pedal pulses and the ABS activates when stopping gently, a sensor may be giving a false reading from a dirty sensor or a cracked reluctor ring.

Speedometer or tyre warning faults

On cars that take road speed or tyre pressure monitoring from the wheel sensors, a faulty sensor can upset the speedometer or set a tyre warning.

Other systems disabled

Hill-hold, cruise control, stop-start and some electric parking brake functions may stop working when a wheel speed signal is missing.

When should it be done?

ABS sensors have no replacement interval. They are replaced when they fail or when their wiring is damaged. Get the car checked as soon as the ABS light comes on, because the car won't stop as well in an emergency on a wet road without ABS and stability control. An ABS warning light that stays on is also an MOT failure. Faults often show up after brake, hub or suspension work, when a sensor or its wiring may have been disturbed.

ABS, traction or stability warning light on
Intermittent warnings in wet weather or over bumps
Warning lights after brake, wheel bearing or suspension work
Before an MOT if the ABS light is showing

How we replace an ABS sensor

Check-in and symptomsWe ask when the light appears and whether any work has been done recently, as disturbed wiring after brake or suspension work is common.
Diagnostic scanWe read the ABS module fault codes to identify which wheel is affected and whether the fault is signal, circuit or plausibility related.
Live data and testingWe compare live wheel speed readings on a road test or ramp and test the sensor circuit with a multimeter or oscilloscope to separate sensor, wiring and ring faults.
Inspect the ring and bearingWe check the reluctor ring or magnetic encoder for cracks, corrosion or damage and check the wheel bearing for play, as either can cause a false signal.
Written quoteWe explain the cause and give you a written quote. If the encoder is built into the wheel bearing, we'll explain why the bearing may need replacing.
Replace the sensorWe carefully remove the old sensor, which is often seized in the hub, clean the mounting, and fit the new sensor with its wiring routed and secured correctly.
Clear codes and road testWe clear the fault codes, road test to confirm all four wheel speeds read correctly and the warning lights stay off, and run any calibration the car needs.

Parts we fit

Sensors must match the car exactly. Active and passive types are not interchangeable, and connectors and lengths vary between models and even between axles. We fit OE or OE-equivalent sensors from manufacturers such as Bosch, ATE or Continental. Where the wiring is damaged we repair it properly with sealed connectors, and where the fault is in a reluctor ring or a wheel bearing encoder, we replace that part rather than just the sensor.

OE or OE-equivalent ABS wheel speed sensors
Reluctor rings where cracked or corroded
Wheel bearings with integral magnetic encoders where required
Sensor wiring and sealed connector repairs

How long it takes

45 minutes–2 hours

A straightforward sensor swap often takes under an hour. Seized sensors, wiring repairs or a reluctor ring or wheel bearing replacement take longer. Most jobs are completed the same day.

What’s included

ABS system fault code scan
Wheel speed live data check
Sensor circuit and reluctor ring inspection
Correct replacement sensor fitted
Fault codes cleared
Road test to confirm the warning lights stay off

Getting here from Tooting

From Tooting to our Hackbridge workshop

From Tooting Broadway take Mitcham Road (A217) east past Tooting station; it becomes London Road into Mitcham, through the signalised Figges Marsh junction and around the town centre one-way system to the Cricket Green. Take Cranmer Road (A239) to Carshalton Road (A237) and head south past Mitcham Junction; past Beddington Corner it becomes London Road into Hackbridge, where Soho Mills is near Hackbridge station.

Take Mitcham Road east through Mitcham, then Carshalton Road south to Hackbridge, about 18 minutes. With just the ABS light on, drive gently and leave extra space.

Directions from Tooting

About Tooting

Tooting is a lively, densely built district of south-west London centred on Tooting Broadway and Tooting Bec, two Northern line stations at the bottom and top of the hill. Its streets are mostly Victorian and Edwardian terraces, including the Totterdown Fields estate, the first London County Council cottage estate, with larger houses towards Tooting Bec Common and Furzedown. It has a celebrated food scene along Upper Tooting Road and two indoor markets, and a big workforce at St George's Hospital. Driving is busy and slow on the main roads, with narrow, heavily parked side streets.

Places nearby: St George's Hospital, Tooting Bec Lido, Tooting Commons, Granada Tooting, Broadway Market, Tooting Market

Postcodes: SW17 · London Borough of Wandsworth

More about KITH for Tooting drivers

Questions

ABS Sensor Replacement in Tooting: your questions answered

My car is in a Tooting CPZ. Can you collect it?

Yes. Tell us the street and zone, and we'll arrange collection at a time that works with the parking restrictions. We'll call you with the diagnosis and quote once it's here.

How long does an ABS sensor replacement take?

A straightforward swap often takes under an hour. A seized sensor, wiring repair or wheel bearing replacement takes longer. We'll give you a time with the quote.

Is it safe to drive the 18 minutes to Hackbridge with the ABS light on?

Usually, yes, because your normal brakes still work. Take it steady, leave extra room and avoid hard braking. If the red brake warning light is also on, don't drive it and call us.

Is it safe to drive with the ABS light on?

The car will still brake normally, so you can usually drive it carefully to the garage. But without ABS and stability control the wheels can lock under hard braking, so leave extra distance. If the brake warning light is on as well, get advice before driving.

Will an ABS light fail the MOT?

Yes. An ABS warning light that stays on, or doesn't come on when the ignition is switched on, is an MOT failure. The same applies to the electronic stability control warning on cars that have it.

Can I just clear the code?

If the fault is still there, the ABS module will find it again, usually within a short drive. Clearing codes without finding the cause just delays the repair.

Why might I need a wheel bearing as well?

On many modern cars the magnetic ring that the sensor reads is built into the wheel bearing seal. If that encoder is damaged or the bearing has excessive play, a new sensor won't cure the fault, and the bearing has to be replaced.

Why did the light come on after my brakes were done?

ABS sensors and their wiring sit close to the brakes and hubs, so they can be knocked, stretched or left unplugged during brake or suspension work. Sometimes an old sensor that was already corroded fails when disturbed. A quick scan shows which wheel is affected.

Instant quote

Price your ABS sensor replacement now

Enter your reg and we’ll look up your car and price the job from our own labour rates and the book time for your model. Then book it in with a fixed written quote before any work starts.

Free, about 30 seconds, no sign-up
Parts, labour and VAT included
3-month workmanship warranty
Collection from Tooting can be arranged

“It’s rare to find a garage you can truly trust. Fair price, brilliant customer service.”Thinushan K. · ★★★★★ Google

Prefer to talk? Call 020 4629 9469 or WhatsApp us.

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