annoying tire pressure message
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
annoying tire pressure message
every once in a while ( every 3 days ) i get the “please correct tire pressure” and it only appears when i drive the car for a certain period of time, i am currently sitting on 35 psi front and 34 rear ( warmed up ) so is it normal to get this message many times or i am doing something wrong or it is an issue related to the tires? thankyou
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
every once in a while ( every 3 days ) i get the “please correct tire pressure” and it only appears when i drive the car for a certain period of time, i am currently sitting on 35 psi front and 34 rear ( warmed up ) so is it normal to get this message many times or i am doing something wrong or it is an issue related to the tires? thankyou
Member
Joined: Aug 2019
Posts: 122
Likes: 26
From: Miami, FL
2020 E63S Wagon, 2021 GLE450
MB recommends 41psi for the front tires and 36 for the rears. At least in my wagon. Any reason you keep the fronts so low? You can adjust the tire pressures on the tire pressure monitor in the car to accept those tire pressures as normal, but they are lower than MB recommends.
MBWorld Fanatic!
Joined: Jul 2008
Posts: 8,384
Likes: 800
2019 G70 6MT & 2022 Ford Maverick XL
Are they recommending 41PSI for MPG? I am struggling to come up with another reason.
I had two W204s in the past - one a 2011, one a 2014, same wheel/tire setup but the 2014 recommended much higher pressure. The 2011 was something like 30/33 and the 2014 36/39. Something crazy like that. Made me think they were after better efficiency ratings.
I had two W204s in the past - one a 2011, one a 2014, same wheel/tire setup but the 2014 recommended much higher pressure. The 2011 was something like 30/33 and the 2014 36/39. Something crazy like that. Made me think they were after better efficiency ratings.
Last edited by LILBENZ230; May 9, 2020 at 04:27 PM.
MBWorld Fanatic!
Joined: May 2017
Posts: 1,725
Likes: 604
From: Southern California
2018 E63S AMG
Are they recommending 41PSI for MPG? I am struggling to come up with another reason.
I had two W204s in the past - one a 2011, one a 2014, same wheel/tire setup but the 2014 recommended much higher pressure. The 2011 was something like 30/33 and the 2014 36/39. Something crazy like that. Made me think they were after better efficiency ratings.
I had two W204s in the past - one a 2011, one a 2014, same wheel/tire setup but the 2014 recommended much higher pressure. The 2011 was something like 30/33 and the 2014 36/39. Something crazy like that. Made me think they were after better efficiency ratings.
The tire pressure rating also has to do with load (number of passengers and cargo) and speed - see fuel cap door for recommended pressures. At higher speeds they want even higher pressure.
My guess (not a tire expert, so only a guess) is to help the tires run cooler and also to further protect against rim damage as the impulse of a pothole strike will be greater at higher speeds.
Member
Joined: Aug 2019
Posts: 122
Likes: 26
From: Miami, FL
2020 E63S Wagon, 2021 GLE450
Any reason for running at 36 psi? Are you in the US? The sticker on my fuel door says front tires at 41 psi, or higher for heavier loads. I usually run mine around 40 psi in front and 34 in rear.
Trending Topics
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
i am located in kuwait and yes it makes the ride more smooth instead of being rough
MB World Stories
The Best of Mercedes & AMG
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
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Mar 2006
Posts: 4,278
Likes: 377
From: San Jose area
'19 E63S sedan
It's your car so if prefer the ride at that pressure go for it, but the handling and dynamics of the car are compromised. It's not just about mileage. It's the way the AWD system is calibrated. As long as the TPMS detects that the front axle is not around 5 psi higher than the rear, it will complain.
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
You are running the front seriously underinflated and wonder why you're getting an alert?
It's your car so if prefer the ride at that pressure go for it, but the handling and dynamics of the car are compromised. It's not just about mileage. It's the way the AWD system is calibrated. As long as the TPMS detects that the front axle is not around 5 psi higher than the rear, it will complain.
It's your car so if prefer the ride at that pressure go for it, but the handling and dynamics of the car are compromised. It's not just about mileage. It's the way the AWD system is calibrated. As long as the TPMS detects that the front axle is not around 5 psi higher than the rear, it will complain.
MBWorld Fanatic!
Joined: Mar 2006
Posts: 4,278
Likes: 377
From: San Jose area
'19 E63S sedan
That will help. Also note that your front tires are quite a bit warmer than your rears. That's another sign that the chassis is being driven unbalanced. In addition to handling, it will result in premature tire and brake wear. If you can get the temps closer, your car will thank you for it.
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
That will help. Also note that your front tires are quite a bit warmer than your rears. That's another sign that the chassis is being driven unbalanced. In addition to handling, it will result in premature tire and brake wear. If you can get the temps closer, your car will thank you for it.
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
MBWorld Fanatic!
Joined: Mar 2006
Posts: 4,278
Likes: 377
From: San Jose area
'19 E63S sedan
The factory recommendation is 41 for fronts to speeds of 250 kph and 51 above that. Rears can be as low as 33.
These are cold settings. If you are talking about 39 warm that's 37 or so cold, which I would call too low. I never go lower than 39 cold.
But I was pointing out that your display shows you the tire temperatures, and they should be close after the tires are warmed up. You have 50 C in the rear and 56 C in the front. When you adjust your pressure, check out the tire temperatures for important clues on how the chassis balance is.
These are cold settings. If you are talking about 39 warm that's 37 or so cold, which I would call too low. I never go lower than 39 cold.
But I was pointing out that your display shows you the tire temperatures, and they should be close after the tires are warmed up. You have 50 C in the rear and 56 C in the front. When you adjust your pressure, check out the tire temperatures for important clues on how the chassis balance is.
Thread Starter
Member
Joined: Dec 2019
Posts: 77
Likes: 12
2018 E63s
The factory recommendation is 41 for fronts to speeds of 250 kph and 51 above that. Rears can be as low as 33.
These are cold settings. If you are talking about 39 warm that's 37 or so cold, which I would call too low. I never go lower than 39 cold.
But I was pointing out that your display shows you the tire temperatures, and they should be close after the tires are warmed up. You have 50 C in the rear and 56 C in the front. When you adjust your pressure, check out the tire temperatures for important clues on how the chassis balance is.
These are cold settings. If you are talking about 39 warm that's 37 or so cold, which I would call too low. I never go lower than 39 cold.
But I was pointing out that your display shows you the tire temperatures, and they should be close after the tires are warmed up. You have 50 C in the rear and 56 C in the front. When you adjust your pressure, check out the tire temperatures for important clues on how the chassis balance is.
MBWorld Fanatic!
Joined: Mar 2006
Posts: 4,278
Likes: 377
From: San Jose area
'19 E63S sedan
The temp sensor is very accurate. If I'm driving with the sun on one side of the car, those tires will be a degree warmer. Cool tires are happy tires (once they're warmed up).
MBWorld Fanatic!
Joined: May 2017
Posts: 1,725
Likes: 604
From: Southern California
2018 E63S AMG
The tire pressure numbers on the are the pressure when the tire is cold. Whenever possible, the tire pressure should be set cold.
Senior Member
Joined: Oct 2017
Posts: 270
Likes: 99
M8 convert + model Y
You are running the front seriously underinflated and wonder why you're getting an alert?
It's your car so if prefer the ride at that pressure go for it, but the handling and dynamics of the car are compromised. It's not just about mileage. It's the way the AWD system is calibrated. As long as the TPMS detects that the front axle is not around 5 psi higher than the rear, it will complain.
It's your car so if prefer the ride at that pressure go for it, but the handling and dynamics of the car are compromised. It's not just about mileage. It's the way the AWD system is calibrated. As long as the TPMS detects that the front axle is not around 5 psi higher than the rear, it will complain.
I drive 43-44 both front and rear and no alerts
MBWorld Fanatic!
Joined: Mar 2006
Posts: 4,278
Likes: 377
From: San Jose area
'19 E63S sedan
