Why Extreme Heat Is One of the Biggest Threats to Your Car
The heat is also extremely damaging to vehicles. The temperatures in Lahore, Multan and Karachi are consistently above 45 (113F). This, combined with the direct sunlight on an unshaded car, can push the surface temperature of the bonnet and roof up to 80 (176F) or more. Inside the cabin, the temperature reaches above 65 (149F) degrees Celsius within a few minutes of parking.
 Many car owners are concerned with heat as a nuisance. What you should really be concerned about is heat as a mechanical and cosmetic hazard, that will cause the simultaneous aging of: paint, car interior, car tyres, car batteries and car engine components. Knowing exactly how heat affects each one is the first step in maintaining your car during the heat wave in Pakistan.
Protect Your Car Paint Before the Heat Does Its Damage
First ensure that you regularly wash your car and keep the paintwork in good condition, since it forms the first line of defence to defend the metal body against the actual weather. During high temperatures with excessive UV rays, the clear coat layer tends to breakdown earlier than any other season. This starts occurring by way of oxidation and the surface becoming chalky, dull, and loses its shine essentially until serviced.
Bird droppings, tree sap, and even dirt sitting on your paint in the heat of summer become very aggressive because our heat speeds up the chemical reaction these deposits make with your clear coat. So what takes weeks to etch damage in cooler climates can start etching in hours in a Pakistani summer.
UV Protection and Paint Sealant in Pakistani Summer
Prepping your car with a quality wax or paint sealant in summer put down an array of protection that defaires UV rays, significantly slowing down your paint clear coat breakdown. For extended time durability I‘d go with a ceramic coating, as the best protection period. This product will leave a semi-permanent water repelling (hydrophobic) coating that will defend your bike from dust, heat and chemicals several years..
Harris Car Care offers wax, paint sealant, and protective coating products suited to Pakistan‘s climate. Use a protective coating like wax or paint sealant before the seasonal high point in Pakistan: summer is one of the most crucial time to care your car in the summer Pakistan. Visit harriscarcare.com to choose the right protection for summer Pakistan.Â
The Greenhouse Effect Inside Your Car and How to Beat It
This is the effect of direct sunlight falling on a car parked with all windows down. Light enters through the glass and heat gets trapped in the cabin resulting in the temperature inside the car rising well above the ambient temperature. In Pakistan‘s hot summer, the temperature inside the cabin can cross 65 deg. C. in 15-20 minutes.
Not just uncomfortable. Destructive. The brutal heat is baking every surface in your car again and again through the season.
Dashboard, Steering Wheel and Interior Materials at Risk
Unaffected by the the insulating power of the greenhouse effect in Pakistani cars are the dashboards. In the absence of UV protection, the plastic and vinyl material which makes up it dehydrates, cracks and loses colour over 2-3 seasons. The steering wheel material hardens and becomes sticky, chrome trim, PVC spider and body panels develop coloured specks that turn black and warp.
A sunshade reflector situated on the windshield greatly decreases the greenhouse effect, reflecting sunlight away from the vehicle before entering the cabin. Daily parkers without a covered spot would need a full car cover to further insulate against the interior also.
 A UV-protected dashboard dressing from Harris Car Care used on your dash and all other interior surfaces before and during the summer helps keep the materials conditioned, prevents cracking, and extend the life of the materials to maintain a beautiful appearance and resale value of your car.
 A tip: Always keep your medicines, body-sprays, aerosol cans and hand sanitisers out of your car if it is parked in the sun during summer. The medicines can become ineffective if kept above 35 degrees Celsius and the cans can burst if the internal pressure increases.
Engine and Cooling System Care During a Heatwave
Your engine is working harder in the summer heat. It is immediately working in higher ambient temperatures and therefore must be constantly working harder than it would in cooler conditions to maintain a safe operating temperature. If the cooling system is healthy in mild conditions, it can really start to struggle during a heat-wave.
 Look over the level of your coolant frequently before and during the summer. Make sure there are no cracks or leaks in your hoses or connections, because the heat causes rubber parts to decay faster. Pay attention to your temperature gauge when driving, especially if in stop-and-go traffic because the engine gets less movement air.
Coolant vs Water , What You Should Actually Use
One of the most widespread is simply filling the radiator with ‘normal’ water instead of coolant. It might be acceptable at normal temperatures but in the middle of a heatwave this can cause real problems. Water boils at a lower temperature than the recommended coolant, so in very hot conditions it will evaporate more quickly. Once inside the cooling system it converts to steam and this prevents it from effectively creating heat.
Car batteries are also very adversely affected in the extreme heat. The heat causes the battery fluid to evaporate more quickly and speeds up the deterioration of the internal parts of the battery, hence the increase in battery failures during the Pakistani summer. Get the battery tested if it is over two years old before the summer months hit their peak. Keep the terminals clean & top up the fluid (if your battery isn‘t sealed).
Battery, Tyres and the Parts Most People Forget
Not all heatwave drivers are aware of this, but one important heatwave safety tip is to monitor tyre pressure. As with any vehicle, heat increases the pressure of the air (and hence the pressure inside the tyres). Excessively high pressure will result in a reduced contact area with the road and a greater likelihood of a blowout on the hot asphalt. Always check tyre pressure before your car has been driven anywhere and before the tyres have warmed up.
Always fill your radiator with a suitable coolant in the summer. Coolant is designed for the high temperatures and won‘t boil under pressure, plus it will prevent your cooling system from corroding. This is one of the simplest and most effective summer maintenance items you can do.
Smart Parking and Daily Habits That Make a Real Difference
The location and position of your vehicle while parking in a heat wave makes a big difference in the amount of damage that build up. Priority should be given to Covered and shaded parking. When none is available, park so that the windshield is away from direct sunlight or roll down a reflective sunshade across the windshield and rear window.
Don‘t wash your car in the heat during the summer afternoons. Soap and water evaporate on the surface so fast and form deposits and residues that become baked onto your paint. Get out before the sun rises or turn on the lights and wait until after sunset for you car wash. Use a p H-neutral car shampoo from Harris Car Care which will remove dirt safely without damaging your finish.
 If parked in a truly secure place, lower the side windows by a centimetre or so. This will put fresh air into the cabin and cut down on the greenhouse effect even whilst the car is unattended.
Frequently Asked Questions (FAQs)
How often should I apply wax or sealant during summer in Pakistan?
Apply a quality wax or paint sealant at the beginning of summer and again mid-season if your car is parked outdoors daily. For longer lasting protection, ceramic coating applied once provides coverage through multiple summers.
Is it safe to leave a car cover on in extreme heat?
Yes. A quality car cover reduces direct UV exposure and keeps both the paint and interior cooler. Make sure the cover is breathable to prevent moisture buildup underneath.
Why does my car battery die more in summer than winter?
Heat accelerates the chemical reactions inside the battery and speeds up fluid evaporation. Batteries already weakened by age fail much faster under summer heat. Regular testing and replacement before summer is important car care Pakistan practice.
Can the greenhouse effect crack my windshield?
Not commonly from heat alone, but a combination of extreme interior heat and cold water being poured on the glass can cause thermal shock cracks. Avoid splashing cold water on a hot windshield after parking in summer sun.
Keep your car protected all summer long with the right products from Harris Car Care. Visit harriscarcare.com to explore our full range of summer car care solutions, from paint protection to interior care products designed for Pakistan's extreme heat.
