TheHegre

Hi, my first post here

My coolant level indicator came on a few weeks ago. so I poured in maybe 1,5L of water. (I just added coolant today, to avoid damage.)

Checked underneath my car and noticed that, whenever the engine is running, water (and what's left of the coolant) is dripping down underneath from above the gearbox. It runs down both sides of the gearbox, right where the the flat part with the control unit for the gear box is located.

Now, I've checked the hose and plastic bits that runs through the firewall on the left hand side of the car, no luck. completely dry. I tried to look down at the transmission where it connects to the engine, and the coolant doesn's seem to run from the engine and down along the transmission either.

The water pump in the front of the engine is dry, and the black thingy beneath the reservoir is dry.

I can't think of anywhere else the water might be coming from..? Checked engine, no water in the oil. Transmission sounds and acts just fine, so i'm guessing the water isn't coming from inside the transmission either, since it's been leaking like this for a while. my last guess is that it's coming from the interior heater or something, but i haven't had the guts to rip out the dash yet.

Anyone have any idea how the coolant ends up above the gearbox?

Thanks!

Plutoe

Get the system pressure tested and you will find the leak, however continuing on with the FUYA approach will get nothing accomplished.

brian1980

Sorry - I meant to post the message below on a different thread... but I can't seem to delete the posting. If anyone sees this, and can delete it... please feel free to do so!


For anyone that has replaced JUST the back coolant pipe (part # 271-200-13-52), did you need to drain any coolant before removing the part? And if you didn't drain first - did much coolant pour out after removing it?

I'm just curious... since my hose is leaking, and the car has been sitting for a couple weeks - so I'm thinking that all the coolant in that area of the engine may have already drained out - so that if I disconnect the part now, no more coolant will be there to leak... and hence no need to drain any first. I also don't want to lose coolant all over the place, on the ground, when taking the part off.

thanks for any responses... I know most of the posts on this chain are very old, by now!

paste

the hose taking coolant that goes from the top of the head into the firewall to the heater core is probably needing to be replaced

*edit - or you might have a headgasket leak

edyy

W211 2007 1.8 kompressor, same problem with coolant on gearbox. After I replace all the 4 parts, the coolant was still droping. The problem was what "Paste" said, the hose that go to firewall A 211 832 46 94.

Pitbullzer26

I have the exact same problem right now. Did you managed to find the problem?

Jimbobm

How do i tell if head gasket leak ?????

Jimbobm

how do i check for head gasket leak ?

Fordey

Have to inspect the engine from underneath, you'll see coolant or staining where the head and the block meet if its the headgasket. Common issue with these. My headgasket is slightly leaking like this and my gearbox has coolant staining on it from the coolant running down the engine from the headgasket.