2017 GLS550 Coolant Leak

[rpaoness]

Unless I'm missing something they don't appear to have the coolant fitting.

[kevm14]

Ah you are correct. I never checked. That's pretty lame on their part. I rarely order from them. My last order was 1 year ago for an axle boot kit.

I can't tell if Warwick has it. Or my phone isn't showing the usual "In stock" type info.

[rpaoness]

The coolant fitting replacement was only a PIA because of access to the rear hose clamp. They left what I assume is a service loop in the 3/8" or whatever lower line that made that easy. All back together and no leaks with a couple hour pressure test.

I was going to change the oil while I have it in and on the lift (4200 miles ish?). Based on test-running with the hood open I believe I should do an idler bearing and I guess serpentine belt change shortly since I think it's noisy.

[rpaoness]

Oh yeah, replacement of the plastic cylinder head plug was really simple. Based on how easy it went in, I hope it doesn't leak/loosen again. Rubber seal molded into the old one seemed hard/old, so hopefully that's why it leaked.

[kevm14]

I was going to change the oil while I have it in and on the lift (4200 miles ish?). Based on test-running with the hood open I believe I should do an idler bearing and I guess serpentine belt change shortly since I think it's noisy.

Generally spin them and listen for noise or spinning that isn't damped by bearing grease. I believe when I did the big one on top the new one wasn't any tighter so I guess you can't just go by "slop.". Noise is probably a better indicator. And it shouldn't spin endlessly.