danstanford

3 month old Gle 53 which I love but it seems to be very nosy on cold starts under freezing. Generally I run on comfort settings including when I park for the night but when it is really cold I am certain it starts in a much louder exhaust setting till she warms up to where the high idle function goes away. After I first noticed this here in Canada I went south to Myrtle Beach where the symptoms went away but is now back once home.
it is not really a problem but I leave for work around 7 when some of my neighbors are still asleep.
Anyone else see this before I go in for Service A next week?

mr inkredibul

Mine does the same and mine is always parked indoors in a garage.

TF_CC

Ditto - mine is the same way, then after 30-45 seconds she idles down. And I experience that irrespective of the mode - comfort, sport or sport+.

BlownV8

Love the way my 63 sounds on startup. It sounds angry!!!!

Petersla

yup. Same here. Mine is garaged as well. It always starts in Comfort and sounds a tad "angry", lol.

evilsaint

Pretty sure it opens the exhaust valves quite a bit on cold start because you can hear the turbos whistling that much more when the idle goes down, but that's just my opinion. Same here on a 2017 63 S though, even without the Sport exhaust.

Would sorta make sense that it's trying to make sure it gets all of the highly-oxygenated gasses completely out of the exhaust system, since that's what a lot of cars do on cold starts via some kind of injection pump. Somebody correct me if I'm wrong in the case of our specific cars, though.

Cole328

If you think that is loud, you should try the Emotion Start one day....I generally use that function when a) in a parking garage, as it crackles like a shotgun, or b) when I want to scare some "karen" that is parking too close next to me

evilsaint

Ok, that's just cool as hell. Time to make up an excuse to buy a W167 now!

mikemdd

I use "emotion start" on my 2022 AMG GLE 63S almost every time I start it. Embarrassing to say but it is kind of a "look at me" moment...... I do wonder whether the increased rpm level at start is hard on the engine due to lack of initial lubrication with high rpm's at the start.

evilsaint

Found an older thread with a good technical summary.

mikemdd

Great explanation on start-up programming. Thanks for that. The reason I was asking about high revs at startup was because Porsche 997's and earlier engines have a well known issue of bore scoring when cars sit for a while and are started before the bore is properly lubricated. It was clearly a design flaw by Porsche with cylinder composition and other issues.

chrislk55

WOW ! I had no idea about this "emotion start" option ! I tried it this evening and it's awesome. I'll be using this every time I start the beast from now on. I had no idea this existed, thank you !

TF_CC

Threads like this are why this blog site rocks!!
Just sayin'...

mts301

Yep mine is the same way with my 43 coupe. I am at an apartment complex and it gets rather loud but it does sound good lol !!!

Cole328

very welcome!

Cole328

On a different note, what tire pressures are you gents running on these cars? I have (and still do) owned several sports cars, and never once has the tire pressure been indicated to be higher in Front than rear I know the engine is heavy, but even on wife's land rover, the pressuree are more expected, at 44F and 48R so, on my GLE 53, I am running 40F and 36R as the fuel door indicates seems to be a nice balance of handling admittedly others?

MBUSA_#1

https://tirepressure.org/mercedes-be...3#Base%20Model

grantwoodtx

You should hear a V8 63S with the Performance Exhaust...

mikapen

That doesn't look right.
It looks like numbers from the driver's door post, which aren't the recommended tire pressures. Which aren't the recommended inflation pressures.
The gas flap gives the recommended tire pressure.

I usually end up plus one or plus two over the gas flap pressures.

Cole328

yes....I agree with you the doorflap (with no pass or luggage) looked light at 35F / 32R so, I "split" the difference between that and the full load running 40F and 38R last few days seems to be well balanced

mikapen

And I agree with that, as it seems to make for crisp handling without harshness

However, after 5,000 miles, I saw excessive middle wear on the rears (>1/32), and backed off to 37/34. A slight change in feel, rear seems to contribute more to balance, so I'm still there. Wear evened out.

The 164/166 seemed to like the additional rear roll stiffness - with higher rear pressures.
​​​But one of the things I like about the 167 is it's better balance and better involvement of the front end. Better overall balance.

Cole328

OK helpful and thanks for the quick reply I only have ~1900 miles, so still playing around with pressure 95% of the time, its just me in the car, no passengers and no baggage, so perhaps even 40/38 is too much I'll try adjusting down to yours and see

Assume you are running the 22" setup?

mercedesbuff

Even the Mercedes Me Connect app agrees with @mikapen ...


Hope that helps!

mikapen

21's. I probably carry 150# of hitches and winter gear.

Cole328

ahh gotcha I am on the 22's, but still going to try your suggested setup seems logical thanks!