Few questions,just picked up my 2018 S450
1st issue: When I got the revs up past maybe 3 or 4k trying to get up to highway speeds, and I felt the car stumble, felt like a misfire. Check engine light came on, I went home and plugged into a scanner and came back with P0306 Misfire on cylinder 6. Shut the car off and turn back on it runs fine until I accelerate hard. Now I'm wondering since the dealer filled the car up with gas (Carvana, NOT a MB dealer) maybe they put 87 octane in it, and it requires 91 minimum. I'm hoping once I run this gas out and put some fresh 91 in , it will be better. I do have appt at the dealer , but that's not until Thursday.
2nd issue: Downshifts seem rather clunky, when going back to maybe 2nd and then down to 1st. Is this normal lol? I hope not.
3rd issue: Windshield washer fluid does not spray. I push the button in and the wipers cycle as if they're spraying , but no spray, and no spray motor sound that I can hear of. Weird.
4th issue: Android auto works but every time I touch my phone or cable it disconnects, it could be a faulty or not a quality cable, I will def try another cable and see if its better.
5th issue: Is when I use my android phone making phone calls. No one can hear me very well, and everyone keeps saying "What, What" LOL I found some settings where I could adjust the reception and transmission but that didn't seem to work.
Just wondering if there is any one has experience with any of these issues, while I wait to go to the dealer. I figure the more info I can arm myself with before I go to the dealer, the better I'll be.
Appreciate the help!
Chris



1. I would take it immediately back to the dealer. I would also have a trusted technician to have a look at it beforehand, just so I know if there are other potential future problem areas.
2. Definitely not. I do remember some members having reported something similar in other chats in this forum however.
3. Might sound dumb, but the washer button is a two-stop one. I had a dumbfounded expression when I discovered you could press it further before it would start putting out liquid.
4. Check that the port is not damaged as well, but yeah, the cable is the most probably cause
5. Is it possible that it's actually defaulting to your phone's microphone instead of the car's? I haven't really used Android Auto, ran it once, it felt very disappointing and haven't used it since.
Good luck with the car (do post a photo of it)!
Last edited by Quenthel; Jun 8, 2021 at 04:40 AM.
MB transmissions are not great. They are known for clunkiness. It’s variable and subjective. Not everyone experiences clunks and not everyone has the same tolerance for them. Search a recent thread by user Streamliner. Others on that thread said, “Yeah mine does that too, I thought it was normal.”
My 7G is clunky in certain situations. MB should not produce transmissions and rather let the people who know what they are doing at ZF and Aisin handle it.
1. I would take it immediately back to the dealer. I would also have a trusted technician to have a look at it beforehand, just so I know if there are other potential future problem areas.
2. Definitely not. I do remember some members having reported something similar in other chats in this forum however.
3. Might sound dumb, but the washer button is a two-stop one. I had a dumbfounded expression when I discovered you could press it further before it would start putting out liquid.
4. Check that the port is not damaged as well, but yeah, the cable is the most probably cause
5. Is it possible that it's actually defaulting to your phone's microphone instead of the cars? I haven't really used Android Auto, ran it once, it felt very disappointing and haven't used it since.
Good luck with the car (do post a photo of it)!
I did noticed the washer button is 2 stage, when I hit the washer button I do hear the pump activate but nothing happens.
It actually could be the phones microphone picking up the call. This is when my phone is connected to the car via bluetooth, I have the problem. Never tried answering a call using android auto. I should and see if there is a change in quality.
MB transmissions are not great. They are known for clunkiness. It’s variable and subjective. Not everyone experiences clunks and not everyone has the same tolerance for them. Search a recent thread by user Streamliner. Others on that thread said, “Yeah mine does that too, I thought it was normal.”
My 7G is clunky in certain situations. MB should not produce transmissions and rather let the people who know what they are doing at ZF and Aisin handle it.
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there is no pump noise ;-)
there is no pump noise ;-)
Just S-class things...
I held the washer button for a very long time and nothing every came out. These wipers look and sound dry tho, like they were never used. Gonna go out there and see if I can get one off.
1st issue: When I got the revs up past maybe 3 or 4k trying to get up to highway speeds, and I felt the car stumble, felt like a misfire. Check engine light came on, I went home and plugged into a scanner and came back with P0306 Misfire on cylinder 6. Shut the car off and turn back on it runs fine until I accelerate hard. Now I'm wondering since the dealer filled the car up with gas (Carvana, NOT a MB dealer) maybe they put 87 octane in it, and it requires 91 minimum. I'm hoping once I run this gas out and put some fresh 91 in , it will be better. I do have appt at the dealer , but that's not until Thursday.
2nd issue: Downshifts seem rather clunky, when going back to maybe 2nd and then down to 1st. Is this normal lol? I hope not.
3rd issue: Windshield washer fluid does not spray. I push the button in and the wipers cycle as if they're spraying , but no spray, and no spray motor sound that I can hear of. Weird.
4th issue: Android auto works but every time I touch my phone or cable it disconnects, it could be a faulty or not a quality cable, I will def try another cable and see if its better.
5th issue: Is when I use my android phone making phone calls. No one can hear me very well, and everyone keeps saying "What, What" LOL I found some settings where I could adjust the reception and transmission but that didn't seem to work.
Just wondering if there is any one has experience with any of these issues, while I wait to go to the dealer. I figure the more info I can arm myself with before I go to the dealer, the better I'll be.
Appreciate the help!
Chris
I also picked up a 2019 S450 CPO back in Feb.
1. I have never had that issue.
I drive my cars very hard and no check engine light
its actually very smooth even in high rpms.
I do fill up with 91 oct but tbh the 87 gas is not the issue. The car adjusts to the octane.
Have the dealer check it out for sure.
2. Mine rarely does that and it seems normal.
My previous W205 did that too...
3.Washer fluid on W222 is integrated into the blade so you won't see it spray unless you look real close.
4. Definitely cable issue I use AA as well
5. I have a S21 ultra and phone calls are crystal clear when I make calls through bluetooth or AA.
Talk to the dealer
Hope it helps.
I also picked up a 2019 S450 CPO back in Feb.
1. I have never had that issue.
I drive my cars very hard and no check engine light
its actually very smooth even in high rpms.
I do fill up with 91 oct but tbh the 87 gas is not the issue. The car adjusts to the octane.
Have the dealer check it out for sure.
2. Mine rarely does that and it seems normal.
My previous W205 did that too...
3.Washer fluid on W222 is integrated into the blade so you won't see it spray unless you look real close.
4. Definitely cable issue I use AA as well
5. I have a S21 ultra and phone calls are crystal clear when I make calls through bluetooth or AA.
Talk to the dealer
Hope it helps.
1. The engine misfire was caused by a faulty injector, they replaced that and all the other injectors o-rings.
2. They told me the down shifts are normal, as I expected they would, I can live with it lol.
3. The wiper fluid wasn't dispensing because the screens in the bottle were plugged, they removed the bottle and cleaned the screen and bottle.
4. The AA they said was lack of having a data cable, I guess I had a charge only cable.
5. The phone call issue took a long time for them to figure out and get parts, 8 days. It turns out that it was a faulty mic in the headliner.
Thanks for all the tips! Everything seems fine now, other than I need new from brakes lol! That's no big deal.
Last edited by Chrisnbig; Jul 1, 2021 at 05:52 PM.
1. The engine misfire was caused by a faulty injector, they replaced that and all the other injectors o-rings.
2. They told me the down shifts are normal, as I expected they would, I can live with it lol.
3. The wiper fluid wasn't dispensing because the screens in the bottle where plugged, they removed the bottle and cleaned the screen and bottle.
4. The AA auto they was lack of having a data cable, I guess I had a charge only cable.
5. The phone call issue took a long time for them to figure out and get parts, 8 days. It turns out that it was a faulty mic in the headliner.
Thanks for all the tips! Everything seems fine now, other than I need new from brakes lol! That's no big deal.
I had to teeth out some minor issues as well in the beginning.
Your car should be great for a while. I'm planning to get a two-year extension of my CPO warranty soon though.




My W222 does that clunk when it goes from 2nd to 1st very occasionally, going to live with it seems to be a normal thing.










