2020 C63S Sedan ownership turning into hassle -Trans valve body
Junior Member
Joined: Feb 2024
Posts: 42
Likes: 7
From: Somewhere, AZ
2016 C63S / 2007 350Z
With the KW's and pretty much any aftermarket coilovers you lose the adaptive suspension and the ability to change on the fly between Comfort, Sport and Sport+. Instead you have to manually tweak it for each use case. The manual tweaking is great for the track, but I wouldn't wanna give up the adaptive suspension and the ability to change it on the fly.
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
Thread Starter
Junior Member
Joined: Dec 2023
Posts: 45
Likes: 12
From: California
C63 S AMG
Update. Car is still at the dealer. They replaced he valve body and I was told the car threw another CEL so they are diagnosing again. This morning I received a notification on my Me app that my battery was critical. All this time they never plugged the car in and let the battery almost die. I txt the SA and he said they will hook it up.
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
Thread Starter
Junior Member
Joined: Dec 2023
Posts: 45
Likes: 12
From: California
C63 S AMG
Its been almost 2 weeks. Problem is that kills the battery, also because assuming its 4 yo, original one. Ill get it back and the battery will fail after a few days and leave me stranded lol. Seen it before. We'll see.
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
https://www.juicemyride.com/products...attery-charger
Thread Starter
Junior Member
Joined: Dec 2023
Posts: 45
Likes: 12
From: California
C63 S AMG
Nice. I've used the 6amp battery tender for years on my cars with great results. S2000 is plugged in all the time while in the garage but i only drive it once or twice a month now.
Super Member
Joined: Mar 2019
Posts: 600
Likes: 97
From: NYC area
2019 C63S Coupe
Soon after and after having my car at the Car spa for a few hours, I get on dash notice 12 V Battery See Operator's Manual. (See photo below. I started the car and ran it for a few minutes and the on dash noticed disappeared.
Concerned, I called the SA who advised me to bring it in. So I drove it to the dealership and the battery check failed. They replaced the battery under warrenty. Waited about 2 hours and felt reassured.
The original battery lasted about 3 1/2 years.
So far with the new battery I have not noticed the annoying Partially Charged on my mb app.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
If the battery fails the MB battery test then it's definitely faulty. FWIW, my battery has so far past the test, so it was only my old cheapo charger so far that claimed it was bad, which seems to indicate the issue was the charger. I actually had a conversation with my SA about this as I had them test my battery. Not sure if the test changed since you had yours replaced, but he informed me that it's very hard for batteries to fail the test. They've had cars come in on a flatbed with dead batteries and the battery still passed the test, so they charged them back up and sent the customers on their way, because MB does not approve a battery replacement under warranty as long as the battery passes the test.
Member
Joined: Apr 2017
Posts: 185
Likes: 36
From: San Diego
C63S Coupe/CLA45
If the battery fails the MB battery test then it's definitely faulty. FWIW, my battery has so far past the test, so it was only my old cheapo charger so far that claimed it was bad, which seems to indicate the issue was the charger. I actually had a conversation with my SA about this as I had them test my battery. Not sure if the test changed since you had yours replaced, but he informed me that it's very hard for batteries to fail the test. They've had cars come in on a flatbed with dead batteries and the battery still passed the test, so they charged them back up and sent the customers on their way, because MB does not approve a battery replacement under warranty as long as the battery passes the test.
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
Honestly I don't. I don't quite understand these aftermarket lithium batteries, because lithium batteries require different voltage and charging profiles. You don't wanna charge them up to a 100%. The car on the other hand is designed for an AGM battery, so the voltage and charging profile matches that. Besides, folks seem to have lots of trouble maintaining the lithium batteries in the GT and the S Class. They seem to have even more trouble.
Member
Joined: Apr 2017
Posts: 185
Likes: 36
From: San Diego
C63S Coupe/CLA45
Honestly I don't. I don't quite understand these aftermarket lithium batteries, because lithium batteries require different voltage and charging profiles. You don't wanna charge them up to a 100%. The car on the other hand is designed for an AGM battery, so the voltage and charging profile matches that. Besides, folks seem to have lots of trouble maintaining the lithium batteries in the GT and the S Class. They seem to have even more trouble.
Thanks for that. You saved me $900+
Super Member
Joined: Mar 2019
Posts: 600
Likes: 97
From: NYC area
2019 C63S Coupe
If the battery fails the MB battery test then it's definitely faulty. FWIW, my battery has so far past the test, so it was only my old cheapo charger so far that claimed it was bad, which seems to indicate the issue was the charger. I actually had a conversation with my SA about this as I had them test my battery. Not sure if the test changed since you had yours replaced, but he informed me that it's very hard for batteries to fail the test. They've had cars come in on a flatbed with dead batteries and the battery still passed the test, so they charged them back up and sent the customers on their way, because MB does not approve a battery replacement under warranty as long as the battery passes the test.
Thread Starter
Junior Member
Joined: Dec 2023
Posts: 45
Likes: 12
From: California
C63 S AMG
Trying to purchase an additional year of warranty and dealer told me my car is not eligible. Agent said because my factory warranty is over, which didn't make sense to me. I'm calling another dealer.. I'm at 45K miles and have a few weeks left of CPO warranty. Any recommendations here?
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,356
From: San Francisco Bay Area
2019 C63CS
As far as I know, the dealership/manufacturer extended warranties have to be purchased before the factory warranty expires, but you can get extended warranties from independent companies, which don't have that requirement. They will instead require an independent inspection of the car to assess its current state.
Super Member
Joined: Mar 2019
Posts: 600
Likes: 97
From: NYC area
2019 C63S Coupe
Trying to purchase an additional year of warranty and dealer told me my car is not eligible. Agent said because my factory warranty is over, which didn't make sense to me. I'm calling another dealer.. I'm at 45K miles and have a few weeks left of CPO warranty. Any recommendations here?
In April, 2023 at the end of my factory warranty. I purchased a MB 2year/75,000 miles Extended Warranty. Also available is to extend this warranty for 1 additional year if so desired. And that's it.
* If you are able to obtain a MB Extended Warranty it does not cover battery or fuses.
Thread Starter
Junior Member
Joined: Dec 2023
Posts: 45
Likes: 12
From: California
C63 S AMG
Thanks guys,
I called another dealer and they confirmed its eligible. $6888 for 2-year add-on, unlimited mileage. Will look at this option. While I don't drive recklessly, I do not baby this car and don't expect to, lol
I called another dealer and they confirmed its eligible. $6888 for 2-year add-on, unlimited mileage. Will look at this option. While I don't drive recklessly, I do not baby this car and don't expect to, lol
