LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

front passenger side antifreeze leak

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Old 08-10-16, 08:27 AM
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Tantrix
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Yeah im the 2nd owner.

green or red, if the leak is at the same location as the water evaporation from the ac, bottom passenger side under middle rocker panel drain pipe, im assuming it's a leak in the hoses, pipe, tube or component thats right above the leak
Old 08-10-16, 11:55 AM
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Doublebase
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I haven't been following the thread...not really sure exactly where OP is seeing the leak, but a lot of AC systems use a green dye in the system to locate where a leak is coming from (because it can be difficult). The dye is bright/fluorescent green. If it's leaking on the inside - passenger side - it may be leaking from the evaporator. Although I'd kind of find that unlikely because the evaporator is on the low pressure side of the AC system and the dye should flow out the evaporator tube, to the bottom of the car (where the condensation goes).

If the AC isn't blowing cold anymore, then yeah, it's the AC.

There are two heater hoses on the passenger side of the engine that also could be a source of a coolant leak, but that of course would be pink in color. The only thing I can think of that would be green is dye in the AC system.
Old 08-10-16, 04:47 PM
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I really appreciate all your input here guys. thanks.

so it turns out the antifreeze coolant is actually pinkish red, so the greenish water leak is not antifreeze.

so Im thinking its color added freon possibly ? the AC does work fine though.

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