Jaguar XJ overheating issue related to heating and coolant system on Jaguar XJ

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

Problem overview

Some Jaguar XJ owners report experiencing overheating issues related to the heating and coolant systems, which may stem from factors such as coolant leaks, thermostat failures, or trapped air in the cooling system. These problems can lead to significant engine temperature increases and may be exacerbated by small reservoir leaks that contribute to coolant loss. Additionally, some owners find that heating system malfunctions can impact overall cooling efficiency, complicating the overheating situation. Regular maintenance, including checking for leaks and ensuring proper circulation, is essential to prevent these issues. In cases where overheating has caused severe damage, such as a warped engine block, extensive repairs like head gasket replacements may be necessary. Owners are advised to accurately diagnose the root cause of the overheating by inspecting key components like the water pump and radiator, and to seek professional assistance from certified experts familiar with Jaguar XJ cooling systems for effective repair solutions.

1 person reported this problem
0 comments
Schedule Repair

Jaguar XJ vehicles with this problem

0 model year affected

Search for another problem

RepairPal Car Genius

Ask our experts about your Jaguar.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

 Auto Repair Expert Auto Repair Expert

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday

Call Our Experts