Liquids, Brakes, Alternator... Car Components Most Affected by Heat

During an especially hot summer, heatwaves are expected to be the main concern. High temperatures not only affect us but also certain vehicle components, which may either malfunction or have their lifespan reduced. It is crucial to understand which car parts suffer the most from high temperatures.

"Although vehicles are designed to withstand both cold and heat, high temperatures are particularly detrimental. Therefore, it is essential to implement a series of measures to minimise the impact of heat on our cars, especially during an intense summer as forecasted. We are talking about crucial elements such as the battery, cooling system, brakes, electronic systems, or air conditioning," says Xavier Celda, market manager of Technical Parts and Workshop at Norauto Spain.

Firstly, the battery. It is one of the components that suffer the most from extreme temperatures. As detailed by the brand, the acid inside the battery dries out more easily in the heat. If the battery is nearing the end of its life, it is much more likely to fail. Therefore, it is often necessary to replace the battery.

Although tyres undergo rigorous testing, asphalt can reach very high temperatures, and over many miles, this can affect their efficiency and condition, especially if they are not in good shape. The brand highlights the importance of always driving with tyres that are not worn out, free of cuts, cracks, or bulges. It is also crucial to maintain the correct pressure.

Pay attention to the evaporation of liquids in high temperatures. The cooling system must function correctly to prevent serious heat-induced breakdowns. Brake fluid and oil should also be checked, along with not forgetting the windscreen washer fluid. Although often overlooked, it is essential for removing dirt and insects from the windscreen, thus improving visibility and safety.

Do not neglect the braking system, which may perform worse in high temperatures. It is advised to avoid prolonged braking to allow them to cool. Remember that brakes can overheat in the heat. They should be checked at the slightest sign: a sinking or hard brake pedal, loss of braking capacity, noises, or vibrations when braking.

Alternator deterioration. In fact, it is one of the components that generate the most workshop visits during these hot periods. Extremely high ambient temperatures contribute to alternator overheating. If this occurs, there will be a smell of burning rubber or cables, and the alternator will be too hot to touch. Preventing this overheating is crucial to avoid severe damage.

Electronic systems affected by high temperatures. The navigator, digital dashboards, or infotainment systems can be adversely affected, especially if exposed to direct sunlight.

Do not forget other elements such as wipers, dashboard, lights, rubber seals, or the dashboard.