How Tyre Sensors Work: Essential Guide for UAE Drivers

Keeping the right tyre pressure is key to safety and fuel efficiency. That's where tyre sensors come in. These small devices, part of the Tire Pressure Monitoring System (TPMS), help you stay aware of your tyre's condition. 

What Are Tyre Sensors?

Tyre sensors are electronic tools that check the air pressure inside your car's tyres. They are usually part of a system called TPMS, which stands for Tire Pressure Monitoring System. TPMS has been around for years, but has become standard in most new cars.

In simple terms, these sensors alert you if your tyres are under-inflated (too low on air) or over-inflated (too much air). This helps prevent accidents, saves fuel, and makes your tyres last longer. In the UAE, where roads can get very hot, proper tyre pressure is extra important to avoid blowouts.

There are two main types of TPMS: direct and indirect. Let's break them down.

How Do Tyre Sensors Work?

Here's a step-by-step explanation:

Direct TPMS: 

This is the most common type in modern cars. Each tyre has a small sensor attached to the valve stem inside the wheel. The sensor measures the exact air pressure and, in some cases, the temperature. 

It uses a battery-powered radio transmitter to send this data wirelessly to a receiver in the car. If the pressure drops below a safe level (usually 25% below recommended), a warning light turns on your dashboard.

• Pros: Accurate and shows which tyre is low.
• Cons: Sensors need batteries, which last 5-10 years and may need replacement.

Indirect TPMS: 

This type doesn't use sensors in the tyres. Instead, it relies on the car's anti-lock braking system (ABS) wheel speed sensors. When a tyre loses air, it gets smaller and spins faster than the others. The system detects this speed difference and alerts you.

• Pros: Cheaper and no batteries to replace.
• Cons: Less accurate; can't tell the exact pressure or which tyre is affected.

When the system detects a problem, you'll see a warning light on your dashboard, it looks like a tyre with an exclamation mark..

Benefits of Tyre Sensors for UAE Drivers

In the UAE's desert heat, tyres can lose pressure quickly. TPMS helps by:

• Improving safety: Low pressure can cause blowouts or poor handling.
• Saving money: Proper inflation boosts fuel efficiency by up to 3%.
• Extending tyre life: Even pressure reduces wear.
• Meeting regulations: Keeps you compliant with UAE laws.

Comparison of Direct vs. Indirect TPMS

Here's a simple table to compare the two types:

TPMS Regulations in the UAE

In the UAE, TPMS has been mandatory for all new passenger vehicles since 2018, and this rule continues in 2025. The Ministry of Energy and Infrastructure (MOEI) requires it as part of vehicle safety standards. During annual car registration renewals, tyres are inspected, and faulty TPMS could lead to failure.

Also, tyres older than five years are not allowed on UAE roads, especially in summer. If your car doesn't have TPMS, consider adding an aftermarket system for safety.

FAQs

What does the TPMS light mean?

The TPMS light means one or more tyres have low pressure. Check and inflate them soon.

Are tyre sensors mandatory in the UAE?

Yes, since 2018, all new cars must have TPMS. It's part of the 2025 safety rules.

How long do TPMS sensors last?

Sensors last 5-10 years, depending on the battery. Replace them during tyre changes if needed.

Can I drive with the TPMS light on?

It's not safe for long. Stop and check your tyres to avoid damage or accidents.

How often should I check tyre pressure in the UAE?

Every two weeks, or before long drives, due to hot weather.