Why is my Jeep Cherokee losing coolant but there’s no visible leak under the car? Detail:

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Why is my Jeep Cherokee losing coolant but there’s no visible leak under the car? Detail:

I drive a 2015 Jeep Cherokee in Karachi, and I’ve noticed that the coolant level keeps ping, but I don’t see any obvious puddles under the car. There’s no overheating warning yet, but I’m topping up coolant every few days. Could this be due to a slow radiator leak, a cracked reservoir, o r an internal engine issue? What’s the best way to diagnose this in Pakistan’s hot climate?

Talha Kyanii asked on 15 Oct 2025 15:29:11 pm

1 Answer

14 views |

Gari Master - on 15 Oct 2025 15:32:17 pm

If your Jeep Cherokee is losing coolant without visible leaks, it may not be leaking externally — it could be:

🔍 Possible Causes:

Slow leak from the radiator o r hoses that evaporates before dripping.

Coolant reservoir cap not sealing properly, allowing coolant to escape as vapor.

A leak in the heater core you may smell sweet coolant inside the cabin.

Internal engine leak head gasket issue — check for white smoke from the exhaust o r milky oil.

Evaporation due to high engine bay temperatures, especially in cities like Karachi.

🔧 What You Should Do:

Get a cooling system pressure test — this helps identify hidden o r slow leaks.

Check the radiator cap and coolant reservoir for cracks o r weak seals.

Inspect around the water pump and radiator neck — leaks here are common but subtle.

If you suspect internal leakage, do a compression test o r head gasket test.