Help: Something Leaking

[d2a4]

Something leaking from the driver side corner near the bumper side vent, what is it? definitely not coolant

[sonosam]

Windshield washer fluid? The reservoir and both pumps are there...

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[dturn37]

Check to see if the hose is on the headlight washer. Mine came off slightly and leaked washer fluid.

[d2a4]

OK, took the undertray off and definitely leaking from the side cooler? pinkist so it's coolant but the coolant tank is at min, not empty. Still leaking very slow. Look like auxiliary radiator?[IMG][/IMG]

[PetrolDave]

Wet at the bottom of the auxiliary radiator isn't a good sign.

Looks like that's your culprit.

[ven0m]

You need a new AUX rad, this was my first part on the car I needed to change after buying it. Just a heads up; they are expensive.

[d2a4]

Hat off to you sir :)
RS4 has two? Both are identical? Need to replace both? Car has 166K

You need a new AUX rad, this was my first part on the car I needed to change after buying it. Just a heads up; they are expensive.

[PetrolDave]

RS4 has two? Both are identical? Need to replace both? Car has 166K

Yes the RS4 has two, and they are identical.

Most owners find that only one needs replacing, but it's worth taking a look at the condition of both while you've got the bumper off.

[ven0m]

Hat off to you sir :)
RS4 has two? Both are identical? Need to replace both? Car has 166K

You're welcome. It's an easy job to do it yourself and get to know the car for the first time.
Learning to get the bumper off is a practical skill with these cars as all work like changing the bulbs will require it.

Yes the RS4 has two, and they are identical.

Most owners find that only one needs replacing, but it's worth taking a look at the condition of both while you've got the bumper off.

Exactly as PetrolDave said, I replaced only one, but did a check on the other one to see for any physical damages.
The one I replaced was hit in the centre so I took it to a repair guy who welded it and it's still 70% usable. I keep it as a spare if one blows and I need the car and can't wait for spares to arrive. :)