Wiring TeleAid to ACC (Fuse85) to Mitigate Battery Drain
Thread Starter
Junior Member
Joined: Apr 2024
Posts: 46
Likes: 3
From: WV
2004 E55 AMG Kleeman K4
Wiring TeleAid to ACC (Fuse85) to Mitigate Battery Drain
Hey guys, I have an 04 E55 that has been going through some battery troubles. I finally narrowed it down to fuse 85 in the trunk pre fuse box which is for the telephone interface. It was pulling .25A at all times and left me jumping the car every other day.
Pulling the fuse has completely fixed my problems, but now I get an SRS warning on the dash- I assume because it is connected to SOS.
I had the car coded as tele aid not present, but I have my next and previous track buttons mapped to the phone buttons. When it is coded as not present and I skip tracks, the instrument cluster screen shows a warning that the phone is unavailable. So I can’t go that route.
My next idea is to break open the pre fuse box and cut the connection of that fuse to battery power, then pull in an ACC wire and attach it instead. That way it only draws when the car is on, and it’s still “present” so I don’t get warnings on the dash using the phone buttons.
Do you guys see anything wrong with this? I just didn’t and to have it set off airbags - I have no idea how connected the system is. Or maybe there is a way to disable that phone message without coding the phone as not present?
Pulling the fuse has completely fixed my problems, but now I get an SRS warning on the dash- I assume because it is connected to SOS.
I had the car coded as tele aid not present, but I have my next and previous track buttons mapped to the phone buttons. When it is coded as not present and I skip tracks, the instrument cluster screen shows a warning that the phone is unavailable. So I can’t go that route.
My next idea is to break open the pre fuse box and cut the connection of that fuse to battery power, then pull in an ACC wire and attach it instead. That way it only draws when the car is on, and it’s still “present” so I don’t get warnings on the dash using the phone buttons.
Do you guys see anything wrong with this? I just didn’t and to have it set off airbags - I have no idea how connected the system is. Or maybe there is a way to disable that phone message without coding the phone as not present?
MBWorld Fanatic!
Joined: Jan 2014
Posts: 3,966
Likes: 1,315
From: Republic of Texas
'99 and '05 E55 AMG
Your logic is good. Have you considered just replacing the module with a used unit?
You can use the electrical schematics to identify the unit. WIS with schematics is available from charm.li. Either review them online or download the .zip file. If you have Windows 10 or 11 you may need to install an aftermarket download manager because of the size of the .zip file (1.2GB). My version of Win11 would choke and 1.0GB and abort the download.
You can use the electrical schematics to identify the unit. WIS with schematics is available from charm.li. Either review them online or download the .zip file. If you have Windows 10 or 11 you may need to install an aftermarket download manager because of the size of the .zip file (1.2GB). My version of Win11 would choke and 1.0GB and abort the download.
Member
Joined: Jul 2006
Posts: 169
Likes: 6
When Teleaid is set to "Not Present", it must also be set to "Not Present" in the Airbag menu, otherwise you will get the SRS warnings as you are now experiencing.
Whomever coded your car previously (using Star / Xentry) can do this.
Whomever coded your car previously (using Star / Xentry) can do this.
Thread Starter
Junior Member
Joined: Apr 2024
Posts: 46
Likes: 3
From: WV
2004 E55 AMG Kleeman K4
Your logic is good. Have you considered just replacing the module with a used unit?
You can use the electrical schematics to identify the unit. WIS with schematics is available from charm.li. Either review them online or download the .zip file. If you have Windows 10 or 11 you may need to install an aftermarket download manager because of the size of the .zip file (1.2GB). My version of Win11 would choke and 1.0GB and abort the download.
You can use the electrical schematics to identify the unit. WIS with schematics is available from charm.li. Either review them online or download the .zip file. If you have Windows 10 or 11 you may need to install an aftermarket download manager because of the size of the .zip file (1.2GB). My version of Win11 would choke and 1.0GB and abort the download.
if coding doesn’t fix it and the part is cheap I might jus throw it in.
Thread Starter
Junior Member
Joined: Apr 2024
Posts: 46
Likes: 3
From: WV
2004 E55 AMG Kleeman K4
I had no idea it also tied into SRS, so I’ll go into that menu and see if setting it not present there disables the check. Good idea!
Member
Joined: Jun 2019
Posts: 120
Likes: 13
2006 CLS55 IWC, 2003 Black E55 designo interior, 2005 White designo E55
My 2003 e55 did this recently. For years I had the teleaid not present in the relevant modules.
a couple of weeks ago all on its.own, SRS fault. And i cannot communicate with the module. I am ok communicating with SRS module of course.
I suspect the tele module has gone bad and by default triggers light. I wonder if I can just discinnect.it all.
Id like to reduce the number of electronics unecessary in this car.
a couple of weeks ago all on its.own, SRS fault. And i cannot communicate with the module. I am ok communicating with SRS module of course.
I suspect the tele module has gone bad and by default triggers light. I wonder if I can just discinnect.it all.
Id like to reduce the number of electronics unecessary in this car.
Thread Starter
Junior Member
Joined: Apr 2024
Posts: 46
Likes: 3
From: WV
2004 E55 AMG Kleeman K4
My 2003 e55 did this recently. For years I had the teleaid not present in the relevant modules.
a couple of weeks ago all on its.own, SRS fault. And i cannot communicate with the module. I am ok communicating with SRS module of course.
I suspect the tele module has gone bad and by default triggers light. I wonder if I can just discinnect.it all.
Id like to reduce the number of electronics unecessary in this car.
a couple of weeks ago all on its.own, SRS fault. And i cannot communicate with the module. I am ok communicating with SRS module of course.
I suspect the tele module has gone bad and by default triggers light. I wonder if I can just discinnect.it all.
Id like to reduce the number of electronics unecessary in this car.
Trending Topics
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: Feb 2017
Posts: 2,296
Likes: 1,204
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
In my opinion, the easiest way is to remove from xentry the individual modules and use a fiber optic loop to physically remove the module from the car. This is what did for teleaid about a decade ago.
removing SOS did not change any of the functions of the phone of which I had the Bluetooth puck installed Up to 2019 in a 55 I sold that year.
removing SOS did not change any of the functions of the phone of which I had the Bluetooth puck installed Up to 2019 in a 55 I sold that year.
Thread Starter
Junior Member
Joined: Apr 2024
Posts: 46
Likes: 3
From: WV
2004 E55 AMG Kleeman K4
In my opinion, the easiest way is to remove from xentry the individual modules and use a fiber optic loop to physically remove the module from the car. This is what did for teleaid about a decade ago.
removing SOS did not change any of the functions of the phone of which I had the Bluetooth puck installed Up to 2019 in a 55 I sold that year.
removing SOS did not change any of the functions of the phone of which I had the Bluetooth puck installed Up to 2019 in a 55 I sold that year.
Member
Joined: Jun 2019
Posts: 120
Likes: 13
2006 CLS55 IWC, 2003 Black E55 designo interior, 2005 White designo E55
I will try to investigate further what is going on.
I recall buying a fiber optic loop many years ago. will check if it's still in that particular car. Haha. Sme of us have had these cars for so many years, maybe cannot recall everything weve done.
😁
I recall buying a fiber optic loop many years ago. will check if it's still in that particular car. Haha. Sme of us have had these cars for so many years, maybe cannot recall everything weve done.
😁
MBWorld Fanatic!
Joined: Feb 2017
Posts: 2,296
Likes: 1,204
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
yep, research the most ring. The orange wire in all modules is fiber.
