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The coolant light in a 1994 Lexus LS 400 may illuminate for several reasons, primarily indicating low coolant levels in the reservoir. It can also signal overheating due to issues like a malfunctioning thermostat, a failing water pump, or a leak in the cooling system. It's essential to check the coolant level and inspect for any leaks or mechanical failures to prevent engine damage. If the issue persists, consulting a mechanic is advisable.

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2w ago

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