Mini Cooper overheating issue when parked in the sun on Mini Cooper

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mini Cooper owners report experiencing overheating issues after parking in the sun, which can be attributed to several factors. The vehicle's design, characterized by a large window area and dark roof, often leads to significant interior heating when exposed to sunlight, particularly in hot weather. Additionally, some owners have reported damage to the CAS module due to excessive heat, resulting in starting problems during warm conditions. To mitigate these overheating problems, it is advised to park in shaded areas, consider installing window tints to reduce heat entry, and ensure regular maintenance of the cooling system, including checking coolant levels and radiator condition. Taking these steps can help maintain the optimal performance of the Mini Cooper in sunny environments.

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