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Quick Overview
It surprises many new EV owners: your electric Polestar has a cooling system, and it's one of the most important systems on the car. Instead of cooling an engine, it keeps your high-voltage battery in its ideal temperature window — which matters most during a hot Los Angeles summer. This guide explains how EV cooling works, why heat makes coolant health critical, and when a cooling system service or flush belongs on your maintenance list.
In this article:
- Yes — your EV has a cooling system
- Why LA summer heat makes it matter
- What a cooling system service includes
- Simple summer EV care tips
Protect the Battery, Protect the Car
Your battery is the heart (and the value) of your EV, and temperature is one of the biggest factors in how long it stays healthy. Keeping the cooling system in good shape is some of the most important maintenance you can do — and the team at the Polestar Los Angeles Service Center can help you stay ahead of the heat.
Yes, Your EV Has a Cooling System
Polestar vehicles use a liquid thermal-management system with multiple coolant loops that regulate the temperature of the high-voltage battery, the drive motors and power electronics, the on-board charger, and the cabin. An electronically controlled system circulates special coolant to keep each of these in its optimal range. It's a different job from an engine cooling system, but just as essential — and it depends on coolant that's at the right level and in good condition.
Why LA Summer Heat Makes It Matter
Southern California summers — and especially inland heat — put your battery's thermal management to work. Here's why that matters:
- Battery longevity: keeping cells in their ideal temperature window helps limit long-term degradation, protecting range and resale value.
- Faster charging: a properly cooled pack can accept more power during DC fast charging — important when summer heat already pushes the system harder.
- Consistent performance: good thermal management helps maintain steady performance on hot days and longer drives.
When coolant is low, old, or the system isn't working properly, the battery has to work harder to stay cool.
What a Cooling System Service Includes
During service, a Polestar-trained technician can check the coolant level and condition, inspect for leaks, and verify that the pump and control valves are doing their job. When your vehicle's maintenance schedule calls for it, a coolant replacement (flush) refreshes the fluid so the system keeps protecting your battery. The key is to follow the intervals in your Polestar's maintenance schedule rather than guessing — and a pre-summer check is a smart time to make sure everything's in order.
Simple Summer EV Care Tips
- Precondition while plugged in: cool the cabin (and battery) using grid power before you unplug, so you start your drive comfortable and efficient.
- Park in the shade or a garage when you can, to reduce heat soak on hot days.
- Be mindful with back-to-back DC fast charging in extreme heat, which adds thermal load; home Level 2 charging is gentler for daily top-ups.
- Keep up with scheduled service so coolant and thermal components are checked at the right intervals.
EV Cooling & Battery FAQ
Do EVs really need coolant?
Yes. Polestar EVs use liquid coolant to manage the temperature of the high-voltage battery, motors, power electronics, on-board charger, and cabin. It's essential for battery health, charging speed, and performance.
Yes. Polestar EVs use liquid coolant to manage the temperature of the high-voltage battery, motors, power electronics, on-board charger, and cabin. It's essential for battery health, charging speed, and performance.
Why does coolant matter more in summer?
Heat is one of the biggest stressors on an EV battery. A healthy cooling system keeps cells in their ideal range, which protects longevity and supports faster charging — both more important when it's hot.
Heat is one of the biggest stressors on an EV battery. A healthy cooling system keeps cells in their ideal range, which protects longevity and supports faster charging — both more important when it's hot.
How often does a Polestar need a cooling system flush?
Follow the intervals in your Polestar's maintenance schedule rather than a generic rule. Our service team can tell you what your specific vehicle and mileage call for.
Follow the intervals in your Polestar's maintenance schedule rather than a generic rule. Our service team can tell you what your specific vehicle and mileage call for.
Can the cooling system affect my range or charging speed?
Indirectly, yes — if the battery can't stay in its ideal temperature window, the vehicle may limit charging speed or performance to protect itself. Good thermal management helps avoid that.
Indirectly, yes — if the battery can't stay in its ideal temperature window, the vehicle may limit charging speed or performance to protect itself. Good thermal management helps avoid that.
Should I get it checked before a summer road trip?
It's a smart idea. A quick pre-trip service visit can confirm your coolant and thermal system are ready for the heat and the miles.
It's a smart idea. A quick pre-trip service visit can confirm your coolant and thermal system are ready for the heat and the miles.
Schedule Summer EV Service at Polestar Los Angeles
Get ahead of the heat before it gets ahead of you. Schedule service online, check service specials, or call our team. Polestar Los Angeles, a member of the Galpin family, has its showroom at 9701 Wilshire Boulevard, Suite 100, North Hills, CA 90212, with service at 8333 Sepulveda Boulevard, North Hills, CA 91343. Call 818-838-6999 to book your appointment.
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