Car Maintenance in Extreme Heat.

Heat changes the maintenance calendar

In a cooler climate, maintenance follows the manufacturer's schedule and little else. In the UAE, heat and dust compress that schedule: engine oil degrades faster, batteries age faster, rubber perishes faster, and dust clogs filters faster. The manufacturer's schedule is still the baseline — follow it — but the checks between services matter more here than anywhere else, and the RTA advises motorists to inspect their vehicles regularly, including tyre pressure, engine oil and radiator coolant.

The routine below is organised by system, not by brand. It applies to any car, and every interval given is a starting point to confirm against your own handbook, because the correct interval for your car is the one its manufacturer specifies.

Cooling system and engine oil

The cooling system keeps the engine alive in summer, so check it monthly. Only when the engine is completely cold, check the coolant reservoir level against the MIN and MAX marks, look for leaks under the car, and inspect hoses for cracks, swelling or softness. The Car Care Council warns that cooling-system problems are a leading cause of breakdowns and recommends checking coolant regularly and changing it on the manufacturer's schedule.

Engine oil thins and degrades faster in sustained heat, so check the level regularly and do not stretch oil-change intervals through the summer. Some UAE guides suggest changing oil every 5,000–8,000 km depending on model and oil type — treat that as a reported range, not a rule, and use the grade and interval in your handbook. If the temperature gauge starts climbing in traffic, or the oil looks dark and thin well before its due date, have the car checked rather than waiting for the next service.

Battery, tyres and brakes

Heat is harder on batteries than cold. Hot weather accelerates battery-fluid evaporation and internal deterioration, and in the UAE a battery commonly lasts around three years. Test the voltage — a healthy battery reads about 12.4–12.7 volts at rest — and have it load-tested at a garage before summer. Clean any corrosion from the terminals, make sure the battery is held firmly in place, and park in shade where you can, because a battery that bakes in a hot engine bay all day ages faster.

Tyres carry the most visible summer risk. Check pressures every two weeks in summer, when the tyres are cold, against the manufacturer's recommended pressure. Inspect tread depth and replace any tyre below 1.6 mm, look for cracks, bulges and uneven wear, and remember the five-year age rule: tyres older than five years are not allowed on UAE roads, even if the tread looks acceptable, because heat degrades the rubber compound internally. Dubai Police specifically warns that overinflated or worn tyres are more likely to blow out in high temperatures.

Brakes need attention too. Dubai Police notes that heat can cause brake fluid to evaporate, so schedule regular brake checks and keep fluid at the correct level. Listen for squealing or grinding, feel for vibration or a soft pedal, and have the pads and discs inspected at every service — brake failure in summer traffic is not a problem you want to discover by surprise.

Air conditioning, filters and the body

The air conditioning system works harder in the UAE than anywhere else, so service it before summer rather than after it fails. Turn it on and check that cold air arrives quickly and consistently from every vent; unusual noises, weak airflow or unpleasant smells mean it needs attention. A dirty cabin filter reduces airflow and can make the system work harder for less cooling, so replace cabin and engine air filters on schedule — some guides suggest every 15,000–20,000 km for air filters in dusty conditions, or sooner if airflow drops or smells appear. Sand and dust clog filters quickly here, and Dubai Police advises replacing air filters frequently because clogged filters hurt airflow, engine performance and fuel efficiency.

Finally, protect the body. Wash the car regularly to remove sand and dust that abrade paint, use a windscreen sunshade and park in shade to protect the dashboard and seats, and consider paint protection if the car lives outdoors. Check wipers, lights and windows as well — the RTA recommends keeping windows, windscreens and lights clean and checking the vehicle regularly for leaks or faults. None of this is glamorous, but it is what keeps a car reliable through its fifth UAE summer as well as its first.

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