Stop Vehicle - Leave Engine Running
12-13-2019 | 07:47 AM
#1
Thread Starter
Newbie
Joined: Dec 2019
Posts: 5
Likes: 1
2016 C300 4Matic
Stop Vehicle - Leave Engine Running
2016 C300 4Matic sedan with display warning: "Stop Vehicle - Leave Engine Running" and picture of a battery
The light has been on for a couple weeks, with no effect on driving or operation.
Battery is factory original. Volt meter reads 12.26 V with engine off and 15.06 V with engine running. Checked the battery cables - both are tight. Unhooked the negative cable, waited 5 minutes, and re-attached. Warning light returned when car was started.
Plugged in an ODB2 scanner, and it went through a check of 57 systems. All systems normal. No engine fault codes found.
I am thinking of replacing the battery because it is 4 years old anyway.
Any other suggestions?
The light has been on for a couple weeks, with no effect on driving or operation.
Battery is factory original. Volt meter reads 12.26 V with engine off and 15.06 V with engine running. Checked the battery cables - both are tight. Unhooked the negative cable, waited 5 minutes, and re-attached. Warning light returned when car was started.
Plugged in an ODB2 scanner, and it went through a check of 57 systems. All systems normal. No engine fault codes found.
I am thinking of replacing the battery because it is 4 years old anyway.
Any other suggestions?
12-13-2019 | 03:06 PM
#5
Thread Starter
Newbie
Joined: Dec 2019
Posts: 5
Likes: 1
2016 C300 4Matic
Alecmascot - thanks, but I have reviewed all of the posts I could find on this topic and am still in the dark. It looks like my next step is to replace the battery because replacing the alternator would be a lot more expensive.
12-14-2019 | 07:46 AM
#6
Super Member
Joined: Nov 2008
Posts: 585
Likes: 28
From: SA
2008 C350-Sport-AMG-Active Agility Pack + B170 2008+Mitsibishi+Mazda
2016 C300 4Matic sedan with display warning: "Stop Vehicle - Leave Engine Running" and picture of a battery
The light has been on for a couple weeks, with no effect on driving or operation.
Battery is factory original. Volt meter reads 12.26 V with engine off and 15.06 V with engine running. Checked the battery cables - both are tight. Unhooked the negative cable, waited 5 minutes, and re-attached. Warning light returned when car was started.
Plugged in an ODB2 scanner, and it went through a check of 57 systems. All systems normal. No engine fault codes found.
I am thinking of replacing the battery because it is 4 years old anyway.
Any other suggestions?
The light has been on for a couple weeks, with no effect on driving or operation.
Battery is factory original. Volt meter reads 12.26 V with engine off and 15.06 V with engine running. Checked the battery cables - both are tight. Unhooked the negative cable, waited 5 minutes, and re-attached. Warning light returned when car was started.
Plugged in an ODB2 scanner, and it went through a check of 57 systems. All systems normal. No engine fault codes found.
I am thinking of replacing the battery because it is 4 years old anyway.
Any other suggestions?
Is the 15.06V not a bit to high(14.5V)-?
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12-14-2019 | 03:37 PM
#8
Thread Starter
Newbie
Joined: Dec 2019
Posts: 5
Likes: 1
2016 C300 4Matic
Thanks to all who replied. I replaced the battery today and the warning light is now off.
Even though a volt meter was showing that the battery was normal with the engine off and after ignition, a battery tester revealed weakness during start up. Once the alternator kicked in, this weakness was no longer apparent. The battery probably could have lasted another 6 months or so, but the rather sensitive on-board computers were causing the warning light to come on now.
Even though a volt meter was showing that the battery was normal with the engine off and after ignition, a battery tester revealed weakness during start up. Once the alternator kicked in, this weakness was no longer apparent. The battery probably could have lasted another 6 months or so, but the rather sensitive on-board computers were causing the warning light to come on now.
Last edited by Bert222; 12-16-2019 at 09:37 AM.
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chassis (12-14-2019)
06-05-2023 | 01:10 PM
#9
Junior Member
Joined: Jun 2023
Posts: 27
Likes: 4
mercedez
I apologize for bringing up this old thread. I had a similar issue with my vehicle recently; it turns out that I had a discharged battery which is a common cause for this issue. Then you can jump to the conclusion that you had a defective voltage regulator on your alternator w\that is responsible for charging your car’s battery. I did a lot of searches on this issue and came across an in-depth article that may be worth reading. Search for "Mercedes-Benz Stop Vehicle Leave Engine Running on YOUCANIC" and you will see an article that goes over common causes and possible fixes. You can read about it yourself. I hope this information can assist someone else with a similar issue.
