Another "Low battery, convenience functions unavailable" Thread
#1
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
Another "Low battery, convenience functions unavailable" Thread
Let me start by saying i haved searched but havent found my exact answers
Basically i have an 05 e55 and this message pops up on and off constantly.. literally is says low batttery, convenience funcitons unavailable.. 30 seconds later it would say convenience available again..Then back to being unavailable. Back and forth it does this constantly while im driving and its not always 30 seconds... Its very random (30 sec, 5 minutes etc..). I have never gotten a red battery on dash, nor has my car experinced any power issues..
I have changed my auxillary battery, main battery and voltage regulator.. Still no change
I have tested out the output on my altenator. 14.0-14.1.... With as much accessories as i can put on, the voltages doesnt go below 13.8... Driving around in dyno mode... I get 13.9-14.0.. The front battery tested at 12.7... The rear battery was tested at autozone... Results were good..(its brand new so it should be). I have been driving like this for a solid 2 months now.. So i believe its not the altenator
When the message pops on and off the voltage doesnt ever drop, so what could be making the message pop up.. The next thing i was thinking about changing was the bcm..... Im running out of ideas...is there like a reset or something i can do
Every searched popped with people actually having low voltage readings... But has this happen to any of you with good voltage readings, good batteries etc..?
Basically i have an 05 e55 and this message pops up on and off constantly.. literally is says low batttery, convenience funcitons unavailable.. 30 seconds later it would say convenience available again..Then back to being unavailable. Back and forth it does this constantly while im driving and its not always 30 seconds... Its very random (30 sec, 5 minutes etc..). I have never gotten a red battery on dash, nor has my car experinced any power issues..
I have changed my auxillary battery, main battery and voltage regulator.. Still no change
I have tested out the output on my altenator. 14.0-14.1.... With as much accessories as i can put on, the voltages doesnt go below 13.8... Driving around in dyno mode... I get 13.9-14.0.. The front battery tested at 12.7... The rear battery was tested at autozone... Results were good..(its brand new so it should be). I have been driving like this for a solid 2 months now.. So i believe its not the altenator
When the message pops on and off the voltage doesnt ever drop, so what could be making the message pop up.. The next thing i was thinking about changing was the bcm..... Im running out of ideas...is there like a reset or something i can do
Every searched popped with people actually having low voltage readings... But has this happen to any of you with good voltage readings, good batteries etc..?
Last edited by BaDiNfLuEnCe55; 12-02-2012 at 12:54 AM.
#3
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
#5
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
#6
MBWorld Fanatic!
If the Alternator is putting out the correct voltage and current, and the batteries are fresh the issue is usually a BCM, and that's what you have
#7
Senior Member
This thread caught my eye as I just saw this message for the first time a couple nights ago. I was actually trying to get rid of the SOS TeleAid Malfunction message.
I followed a tip on BenzWorld, to turn the headlights on for 2 minutes to run the battery down a bit. When I turned the ignition back on to recharge the battery, I briefly saw this "Low battery, convenience functions unavailable" message, but the SOS TeleAid Malfunction went away and I've not seen the Low battery message again either, so I'd say, Try it:
1) Turn key to position 1.
2) Turn on the headlights for two minutes.
3) Turn key to position 0.
4) Turn key to position 2 to start the car.
I followed a tip on BenzWorld, to turn the headlights on for 2 minutes to run the battery down a bit. When I turned the ignition back on to recharge the battery, I briefly saw this "Low battery, convenience functions unavailable" message, but the SOS TeleAid Malfunction went away and I've not seen the Low battery message again either, so I'd say, Try it:
1) Turn key to position 1.
2) Turn on the headlights for two minutes.
3) Turn key to position 0.
4) Turn key to position 2 to start the car.
Trending Topics
#8
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
#13
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
Another update.. Changed the relay.. Still no diffrence
I have reading diagrams and the way my car has been acting.. Im starting to believe its a wiring problem.. Im going to run a signal wire from the bcm to the battery relay to see if that solves the problem... Also i will try changing the poly fuse.. Anybody knows the part number for the poly fuse
I have reading diagrams and the way my car has been acting.. Im starting to believe its a wiring problem.. Im going to run a signal wire from the bcm to the battery relay to see if that solves the problem... Also i will try changing the poly fuse.. Anybody knows the part number for the poly fuse
#14
sounds crazy but are you sure the connections on your battery are tight. i was getting this error and one of the connections at the terminal was just slightly loose, tightened it down that corrected the issue
#15
![Question](https://mbworld.org/forums/images/icons/icon5.gif)
I am glad to see this thread because I have experienced something similar. I have new main and auxillary batteries and get this message when I don't drive the car for a week or so. I was wondering if it was my alternator before this thread, but now I wonder if it could be something else. If it is the alternator, does anyone know it it would be covered by extended warranty/
#18
MBWorld Fanatic!
I am glad to see this thread because I have experienced something similar. I have new main and auxillary batteries and get this message when I don't drive the car for a week or so. I was wondering if it was my alternator before this thread, but now I wonder if it could be something else. If it is the alternator, does anyone know it it would be covered by extended warranty/
#20
MBWorld Fanatic!
The AUX battery is weak to begin with and the draw over a week can bring it down...It is no big deal IMHO, just a PITA for ~30 seconds or so and then it should be fine...
#21
Junior Member
Join Date: Jul 2011
Location: Orlando
Posts: 46
Likes: 0
Received 0 Likes
on
0 Posts
W211 E55 AMG Kompressor
Battery/Alternator/VR ?????
Help!!!!
Hello everyone, can someone please provide some feedback on this tread, last night while idling my E55 in the garage I smelled a faint burning scent, popped the hood and could not find nor describe the source of this burning smell, however, after checking the forum on the matter it's come to my attention that the alternator/voltage regulator could be on it's way out, convienience message comes on and off now so i know there is low voltage (11.1v) sometimes a bit less, here's my question,,, if, it is the regulator thats bad, would I still get the burning smell???? Or is the burning smell a clear sign that the alternator itself is toasted internally....feedback please!!!!!!!
Hello everyone, can someone please provide some feedback on this tread, last night while idling my E55 in the garage I smelled a faint burning scent, popped the hood and could not find nor describe the source of this burning smell, however, after checking the forum on the matter it's come to my attention that the alternator/voltage regulator could be on it's way out, convienience message comes on and off now so i know there is low voltage (11.1v) sometimes a bit less, here's my question,,, if, it is the regulator thats bad, would I still get the burning smell???? Or is the burning smell a clear sign that the alternator itself is toasted internally....feedback please!!!!!!!
#22
Junior Member
Join Date: Jul 2011
Location: Orlando
Posts: 46
Likes: 0
Received 0 Likes
on
0 Posts
W211 E55 AMG Kompressor
Burning smell under hood...Alternator/VR ????
Help!!!!
Hello everyone, can someone please provide some feedback on this tread, last night while idling my E55 in the garage I smelled a faint burning scent, popped the hood and could not find nor describe the source of this burning smell, however, after checking the forum on the matter it's come to my attention that the alternator/voltage regulator could be on it's way out, convienience message comes on and off now so i know there is low voltage (11.1v) sometimes a bit less, here's my question,,, if, it is the regulator thats bad, would I still get the burning smell???? Or is the burning smell a clear sign that the alternator itself is toasted internally....feedback please!!!!!!!
Hello everyone, can someone please provide some feedback on this tread, last night while idling my E55 in the garage I smelled a faint burning scent, popped the hood and could not find nor describe the source of this burning smell, however, after checking the forum on the matter it's come to my attention that the alternator/voltage regulator could be on it's way out, convienience message comes on and off now so i know there is low voltage (11.1v) sometimes a bit less, here's my question,,, if, it is the regulator thats bad, would I still get the burning smell???? Or is the burning smell a clear sign that the alternator itself is toasted internally....feedback please!!!!!!!
#23
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
Just a little update... So as of now i have replaces
Auxillary battery
Main battery
Aux battery relay
Voltage regulator
Battery control module...
And still i get the low battery message... Its in the shop right now and they are going to test it for a draw... At this point im ready to just sell this car and get a m5
Auxillary battery
Main battery
Aux battery relay
Voltage regulator
Battery control module...
And still i get the low battery message... Its in the shop right now and they are going to test it for a draw... At this point im ready to just sell this car and get a m5
#24
MBWorld Fanatic!
Join Date: Dec 2008
Location: Bay Area, CA
Posts: 2,394
Likes: 0
Received 37 Likes
on
28 Posts
2007 SL55 AMG
Just a little update... So as of now i have replaces
Auxillary battery
Main battery
Aux battery relay
Voltage regulator
Battery control module...
And still i get the low battery message... Its in the shop right now and they are going to test it for a draw... At this point im ready to just sell this car and get a m5
Auxillary battery
Main battery
Aux battery relay
Voltage regulator
Battery control module...
And still i get the low battery message... Its in the shop right now and they are going to test it for a draw... At this point im ready to just sell this car and get a m5
#25
Member
Thread Starter
Join Date: Jun 2009
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
2004 m3, 2005 e55
Suppose the indy has solved the problem.. It was my amp... And. $1300 bill not incuding replacing the amp...i told him leave the fuse unplug... Im not going to replace another part, and thats not the issue.. Going to drive around without the fuse to see if it comes on at all