How do I troubleshoot a faulty radiator in my Vauxhall Zafira Life?

My Vauxhall Zafira Life's radiator seems to be malfunctioning, causing my car to overheat. How can I diagnose and fix this issue?

First, check the coolant level and make sure it's at the proper level. If it's low, add some coolant and see if the problem persists. If the coolant level is fine, the issue may be with the thermostat or water pump. You may need to take your car to a mechanic for further diagnosis and repair.

If you notice any leaking or cracks in your radiator, it's likely that it needs to be replaced. You can try using a radiator sealant as a temporary fix, but it's best to get a new radiator as soon as possible to avoid causing more damage to your engine.

Regular maintenance is key to avoiding radiator issues. Make sure to have your radiator flushed and refilled at least every 2-3 years, and check for any signs of leakage during routine inspections. This will help extend the lifespan of your radiator and prevent costly repairs.