Please Read. Emergency Situation - On Vacation Car Won't Start
Thread Starter
Junior Member
Joined: Dec 2018
Posts: 33
Likes: 1
G63
Please Read. Emergency Situation - On Vacation Car Won't Start
2016 G550 34k miles. Was driving great.
Finished lunch and got in car and all of a sudden I was getting the following error message and constant beeping every 3 seconds "Release Parking Brake".
I never initiated the parking brake and it was not actually engaged because the car would roll from neutral. This continued even if I turned off the car. I was able to get to my destination (5 miles further down the road). Now a few hours later when I try to turn the car on...it won't even crank.
Lights come on and so does the AC but I am getting a ton of error messages:
LOW RANGE Malfunction To Park, Apply Brake
Front Right Malfunction Service Required
Blind Spot Assist Inoperative
SRS Malfunction Service Required
SOS Inoperative
I have never had these error messages until today after that Parking Brake Issue.
Your help is truly appreciated. I am guessing this is some sort of battery issue.
Finished lunch and got in car and all of a sudden I was getting the following error message and constant beeping every 3 seconds "Release Parking Brake".
I never initiated the parking brake and it was not actually engaged because the car would roll from neutral. This continued even if I turned off the car. I was able to get to my destination (5 miles further down the road). Now a few hours later when I try to turn the car on...it won't even crank.
Lights come on and so does the AC but I am getting a ton of error messages:
LOW RANGE Malfunction To Park, Apply Brake
Front Right Malfunction Service Required
Blind Spot Assist Inoperative
SRS Malfunction Service Required
SOS Inoperative
I have never had these error messages until today after that Parking Brake Issue.
Your help is truly appreciated. I am guessing this is some sort of battery issue.
Thread Starter
Junior Member
Joined: Dec 2018
Posts: 33
Likes: 1
G63
Please Read. Emergency Situation - On Vacation Car Won't Start
2016 G550 34k miles. Was driving great.
Finished lunch and got in car and all of a sudden I was getting the following error message and constant beeping every 3 seconds "Release Parking Brake".
I never initiated the parking brake and it was not actually engaged because the car would roll from neutral. This continued even if I turned off the car. I was able to get to my destination (5 miles further down the road). Now a few hours later when I try to turn the car on...it won't even crank.
Lights come on and so does the AC but I am getting a ton of error messages:
LOW RANGE Malfunction To Park, Apply Brake
Front Right Malfunction Service Required
Blind Spot Assist Inoperative
SRS Malfunction Service Required
SOS Inoperative
I have never had these error messages until today after that Parking Brake Issue.
Your help is truly appreciated. I am guessing this is some sort of battery issue.
Finished lunch and got in car and all of a sudden I was getting the following error message and constant beeping every 3 seconds "Release Parking Brake".
I never initiated the parking brake and it was not actually engaged because the car would roll from neutral. This continued even if I turned off the car. I was able to get to my destination (5 miles further down the road). Now a few hours later when I try to turn the car on...it won't even crank.
Lights come on and so does the AC but I am getting a ton of error messages:
LOW RANGE Malfunction To Park, Apply Brake
Front Right Malfunction Service Required
Blind Spot Assist Inoperative
SRS Malfunction Service Required
SOS Inoperative
I have never had these error messages until today after that Parking Brake Issue.
Your help is truly appreciated. I am guessing this is some sort of battery issue.
Thread Starter
Junior Member
Joined: Dec 2018
Posts: 33
Likes: 1
G63
I'm thinking you may be correct....I am hearing there is a main battery as well as an auxillary battery. Anyone else had this issue? Literally every system is malfunctioning and the car won't turn on.
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Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Errors super combo....
it seems like a collection of your computers modules (ECU & SAMs) have gotten temporarily disrupted. This is frequently caused by low voltage ... but there are a hand full of different problems that can produce that glitchy condition, including battery troubles.
Temporary fix:
No crank is a royal pain... but it trumps getting into limp mode in highway traffic.✌️
Temporary fix:
- Charge your batteries (with a CTEK...)
- then disconnect Batts for 15mn
- then hook 'em back in
- Scan you car to gain insight.
No crank is a royal pain... but it trumps getting into limp mode in highway traffic.✌️
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Thread Starter
Junior Member
Joined: Dec 2018
Posts: 33
Likes: 1
G63
Any other ideas? Since I am basically stranded (need to drive back home on Tuesday), don't want to be at the mercy of a dealer so far away from home. I am planning to buy both an auxillary and main battery tomorrow and replace. If this fixes the issue...could it still be a bad alternator? Again this all happened at once.
Am I going down the wrong rabbit hole?
Am I going down the wrong rabbit hole?
Super Member
Joined: Aug 2020
Posts: 782
Likes: 266
G63, G65
Sounds like a bad battery to me as well. More than likely just the main battery. Try and swap in a new one and see if that solves the problem.
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,153
Likes: 1,767
From: Colorado
G550
All this OBD technology, but not a simple annunciation that tells you "Low Battery - 10.6V". Instead, you get entertained by a scary Halloween light show convincing you that you're experiencing a major ECU China Syndrome. Let us know the prognosis.
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Any other ideas? Since I am basically stranded (need to drive back home on Tuesday), don't want to be at the mercy of a dealer so far away from home. I am planning to buy both an auxillary and main battery tomorrow and replace. If this fixes the issue...could it still be a bad alternator? Again this all happened at once.
Am I going down the wrong rabbit hole?
Am I going down the wrong rabbit hole?
Drive with Headlights:ON will lock the alternator output to 13.5v Min... that is cheap insurance against low voltage ⚡
Google the procedure to display your car Voltage on the cluster with "Engineering Menu". This will show you Amps/Volts being produced and used.
😎
Out Of Control!!
Joined: Sep 2018
Posts: 14,671
Likes: 4,574
From: unbegrenzt
2017 GLE350 4MATIC
Any other ideas? Since I am basically stranded (need to drive back home on Tuesday), don't want to be at the mercy of a dealer so far away from home. I am planning to buy both an auxillary and main battery tomorrow and replace. If this fixes the issue...could it still be a bad alternator? Again this all happened at once.
Am I going down the wrong rabbit hole?
Am I going down the wrong rabbit hole?
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
very true!
even the simple Alternator gauge is now a hidden display option 😜
Last edited by CaliBenzDriver; Oct 17, 2021 at 02:48 PM.
Newbie
Joined: Feb 2020
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From: SoCal
2008 G500
Thread Starter
Junior Member
Joined: Dec 2018
Posts: 33
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G63
I changed the batteries so battery can't be the issue. How would I check the battery load. I have limited supplies with me. I did connect a jump start device as well when the new batteries were in..still no improvement. No crank and all the error messages listed above.
Once again all of this started yesterday with the faulty "release parking break message"....then proceeded to car not turning on with all the other error messages.
Could it be a fuse?
Alternator?
Anyone had this before?
Once again all of this started yesterday with the faulty "release parking break message"....then proceeded to car not turning on with all the other error messages.
Could it be a fuse?
Alternator?
Anyone had this before?
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,153
Likes: 1,767
From: Colorado
G550
I changed the batteries so battery can't be the issue. How would I check the battery load. I have limited supplies with me. I did connect a jump start device as well when the new batteries were in..still no improvement. No crank and all the error messages listed above.
Once again all of this started yesterday with the faulty "release parking break message"....then proceeded to car not turning on with all the other error messages.
Could it be a fuse?
Alternator?
Anyone had this before?
Once again all of this started yesterday with the faulty "release parking break message"....then proceeded to car not turning on with all the other error messages.
Could it be a fuse?
Alternator?
Anyone had this before?
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Many errors + NO crank...
Scan your modules to get your list of DTC Faults and pick from there🤞
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,153
Likes: 1,767
From: Colorado
G550
If you can make your way to an auto store (Autozone, O'Reilly, Napa, etc.) you can borrow an OBDII scanner and maybe get some error codes that make sense, and/or reset them and see what happens.
Thread Starter
Junior Member
Joined: Dec 2018
Posts: 33
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G63
Unfortunately I can't get my car to autozone and already have 2 scanners at home....don't want to add a third. Need to start carrying them in the car.
Out Of Control!!
Joined: Apr 2019
Posts: 11,957
Likes: 6,796
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
Quick bush-fix...
While you're stranded away from your tools...
1- You can try to tip-tap around gently (prefuse module, SAM modules, Ignition Key module, driver footwell, passenger footwell...) while you have someone hold the ignition key in crank position - This might very well wake up a flaky relay and a bad ground screw with oxidized contacts... nothing to loose. I'd concentrate on what's switching heavy DC power.
2- Next you can physically check if you got water intrusion (SAM'S enclosures, footwell carpets..)
3- Disconnect both batteries at once for 10+Mn then reconnect MAIN followed by AUX.
🤞
1- You can try to tip-tap around gently (prefuse module, SAM modules, Ignition Key module, driver footwell, passenger footwell...) while you have someone hold the ignition key in crank position - This might very well wake up a flaky relay and a bad ground screw with oxidized contacts... nothing to loose. I'd concentrate on what's switching heavy DC power.
2- Next you can physically check if you got water intrusion (SAM'S enclosures, footwell carpets..)
3- Disconnect both batteries at once for 10+Mn then reconnect MAIN followed by AUX.
🤞
Last edited by CaliBenzDriver; Oct 17, 2021 at 05:58 PM.
