Step 1 – Check the radiator
Overheating is one of the main causes of engine damage in summer. Check the radiator and hoses with the extra demands of hot weather in mind. In particular, ensure there is no dirt or debris blocking airflow through the radiator.
Step 2 – Check the coolant
After cleaning the radiator, check the coolant level as described in the owner’s manual. Ensure the antifreeze and distilled water mixture is suitable for the local climate. The original maintenance guidance in this article refers to replacing radiator coolant generally every three years.
Step 3 – Check the battery
Check the battery’s charge using its colour indicator, where fitted. If it is a wet-cell battery, consider the greater evaporation in summer and have the cell levels checked. The liquid contains acid: avoid inhalation and leave any intervention to a qualified professional.
Step 4 – Check the tyres
If the vehicle still has winter tyres, switch to summer or all-season tyres. Heat increases tyre pressure; inspect their physical condition, tread depth and any cracking. Hot road surfaces place additional demands on tyres.
Step 5 – Check the air conditioning
If air-conditioning performance seems inadequate, have the system checked. Possible issues include the compressor belt, low refrigerant or leaks, insects and debris blocking airflow through the condenser, or a clogged dust or pollen filter.
Moisture around the evaporator can encourage bacterial growth and odours. A specialist can advise on a suitable disinfectant treatment.
Step 6 – Clean and protect the vehicle
Strong summer sunlight can fade paint and contribute to surface deterioration or flaking. Insect residue on the front of the vehicle during long journeys and bird droppings on hot surfaces while parked can damage the paint; seabird droppings can be particularly acidic. Interior upholstery may also become stained. Appropriate products and professional care help address these conditions.
Step 7 – Scheduled servicing and oil changes
Check whether the vehicle’s scheduled service is due. The original article gives a general interval of one year or 15,000 km. When servicing is required, use qualified service providers, original parts, recommended oil and suitable materials.