Jetour X90 ABS Light Stays On? What a Mechanic Would Check First

What that glowing ABS light is actually telling you

When the ABS lamp on your Jetour X90 stays lit instead of switching off a second or two after startup, the ABS control module has found a fault and switched the anti-lock function off as a safety measure. It is not guessing. The module compares all four wheel speed signals dozens of times per second, and the instant one signal drops out, spikes, or reports a speed that does not match the other three, it stores a code and lights the dash. On the X90 this is very often a wheel speed sensor issue, but a chafed harness, a cracked or metal-filings-covered tone ring, a weak battery, or low brake fluid can trigger the exact same warning. The honest first step is pulling the stored codes — a basic engine-only OBD2 reader often cannot reach the ABS module, so you want a scan tool with ABS coverage or a short visit to a workshop.

Check these, in this order

• Wheel speed sensors — front axle first. The front sensors live closest to road spray, brake dust and steering movement, so they fail and get damaged far more often. Look for frayed wiring near the strut, a cracked sensor body, or a loose connector.
• Live data, not just codes. With the scan tool connected, drive slowly and watch all four wheel speeds on screen. A sensor reading 0 km/h while the others read 15 km/h has just told you exactly which corner is at fault.
• Tone rings and sensor air gap. Rust, mud packing, or a chipped ring will confuse the signal. Clean the ring, check for cracks, and confirm the sensor sits at the correct gap with no debris between them.
• Wiring and connectors. Wiggle-test the loom from each sensor to the ABS module while watching live data — an intermittent break will show up as a sudden dropout.
• Supporting basics. Check brake fluid level, battery voltage and charging output. A tired battery causes low-voltage gremlins that set ABS codes on many modern SUVs, the X90 included.

What usually turns out to be the culprit

In the majority of X90 cases with a solid, non-blinking ABS light and no other symptoms, the answer is a single failed wheel speed sensor or its connector. Sensors are a wear item: the internal coil or Hall-effect element degrades with heat cycles and vibration, and water ingress through the plug does the rest. Tone ring damage is the second most common find, followed by a chafed wire where the loom bends near the suspension. A failed ABS module or pump is possible but much rarer, so do not let anyone sell you one before the sensors, rings and wiring have been properly tested. Once the faulty part is replaced, the code must be cleared and the system road-tested — the light should go out immediately after the module sees four matching signals.

Is it safe to keep driving?

If the ABS light is the only warning illuminated, your X90 still brakes normally — you simply do not have anti-lock assistance, so the wheels can lock during hard or emergency braking, especially in rain or on gravel. That means the car is driveable to a workshop for diagnosis, but drive gently, leave a longer following gap, and avoid panic stops. Things change completely if the red brake warning light is also on, if the pedal feels spongy or sinks, if you hear grinding, or if the car pulls under braking: stop driving and get it recovered, because that points to a hydraulic or mechanical brake fault rather than a sensor. If the ABS light flickers or resets itself, that is an intermittent fault that will only get worse — have it scanned rather than waiting for it to fail at the worst possible moment.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.