Leaking coolant from....? - Toyota 4Runner Forum

TrexRunnerGirl · 12-27-2019, 04:27 PM

Now I know why I’m down a bunch of coolant but what is this and what’s the fix please?
It’s on passenger side between front n back door area.

I can’t get the photo to flip the right way. Sorry it’s upside down. I tried to flip it then reload it too, no dice.

02SE · 12-27-2019, 04:34 PM

Those are the rear seat heater lines.

You can connect the to-from rear heater lines together up in the engine bay near the firewall, until the lines can be fixed properly. After doing so you'll need to top up the coolant in the reservoir, and possibly the radiator, depending on how much coolant has been lost.

Don't drive while low on coolant, or the engine will overheat, then you'll have real problems.

TrexRunnerGirl · 12-27-2019, 04:50 PM

Rear seat heater? You mean where the heat blows under the seat from the switch in the center console right.
Good to know.
Yes she will be sitting until I can fix it.

Bad Luck · 12-27-2019, 06:48 PM

Quote:

Originally Posted by TrexRunnerGirl

Rear seat heater? You mean where the heat blows under the seat from the switch in the center console right.
Good to know.
Yes she will be sitting until I can fix it.

Those are indeed the coolant lines for the rear heat. You can search on here but the 01-02 rear heater lines are stainless steel and survive better if you're trying to replace them. Otherwise, like others have said you can loop the lines back to each other and your vehicle will be drive able until you decide to repair it. If you decide to bypass the rear heater make sure to top the coolant off after.

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