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2019 Range Rover Velar - Constant Coolant Loss & Sweet Smell

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Chris P. · rep 0 · May 25, 4:47 AM · 1 replies · solved · Question

Vehicle: 2019 Range Rover Velar P300

Hey Land Rover community, I'm reaching out because I'm constantly losing coolant in my 2019 Range Rover Velar P300. I've noticed a sweet smell, especially after driving, and I have to top up the reservoir every couple of weeks. There are no obvious puddles under the car, but the low coolant warning comes on regularly.

I'm worried about potential engine damage. Has anyone else with a Velar experienced this persistent coolant loss without a visible leak? What are the common failure points I should be looking for or asking my mechanic to check?

Any insights would be super helpful!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:47 AM

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ClearTheCode admin answer:

Persistent coolant loss with a sweet smell but no visible puddles often indicates a slow, internal, or hard-to-spot external leak. This is a critical issue that needs immediate attention to prevent engine overheating and damage.

  1. Common Land Rover Coolant Leak Points:

    • Water Pump: The water pump's seal can degrade, leading to leaks, especially from the weep hole. This is a very common failure point.
    • Thermostat Housing: Plastic thermostat housings can crack or warp over time, causing leaks.
    • Hoses and Clamps: While you don't see puddles, a small leak from a hose or a loose clamp might evaporate quickly on hot engine components, leaving behind the sweet smell.
    • EGR Cooler (if applicable): Some engines use an EGR cooler that can develop internal leaks, burning coolant and producing white smoke from the exhaust, but the sweet smell can also be present.
    • Radiator End Tanks: Plastic end tanks on the radiator can crack.
    • Heater Core: An internal leak in the heater core would cause a sweet smell inside the cabin and potentially dampness on the passenger floor, but no external puddles.

  2. When to See a Shop:

    • Immediately: Continuing to drive with low coolant can lead to engine overheating, head gasket failure, or even a cracked engine block. Do not delay.
    • Pressure Test: A professional shop will perform a cooling system pressure test. This involves pressurizing the system and visually inspecting all components for leaks that might only appear under pressure. They will also check for any relevant OBD codes, though P0116 (Engine Coolant Temperature Sensor Circuit Range/Performance) might appear if the coolant level gets critically low and affects sensor readings.
    • UV Dye Test: If no leak is found during the pressure test, a UV dye can be added to the coolant. After driving, a UV light can reveal otherwise invisible leaks.
    • Repair: Depending on the source, repairs could range from replacing a hose to a new water pump, thermostat housing, or even radiator. Address this promptly.
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