Bypassing BOSE amplifier on SLK 320 and related problems - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

 2Likes
  • 1 Post By mightycpa
  • 1 Post By mightycpa
 
LinkBack Thread Tools
#1 Old 05-04-2007
Registered Users
 
Join Date: Jan 2007
Location: California
Vehicle: SLK 320 2001
Posts: 4
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
(Thread Starter)
Question Bypassing BOSE amplifier on SLK 320 and related problems

I am trying to find out if bypassing my BOSE amplifier that came originally with the car could have introduced 2 new problems. Immediately after I bypassed the amplifier my SRS light showed and the quiescent current consumption of the car is 860mA (the spec says it should be <=50mA) which destroyed my battery after 3 days of not driving the car. The original tape radio is Alpine CM1910 (208 820 11 86) and it controls the original BOSE amplifier AMP,3300,R170 RC,PROD (170 820 06 89) and the original CD-changer. I bypassed the amplifier by removing its connector completely and shorted the wires for the speakers so that a circuit is complete between each speaker and the new radio Pioneer 6800MP (MP3,WMA,Satelite Radio, etc). The new radio works fine. It's hard to believe that the amplifier removal is related to the SRS and quiescent current problem but maybe somebody has had similar experience? Is there a subwoofer that the amplifier was supposed to shutdown when the car is locked and now it's draining power? The bigger portion of the quiescent current is the trunk lamp not turning off after the car is locked (I lowered the quiescent consumption to 160mA after removing it). Does anybody know where the sensor for that trunk lamp is?
ventzi75 is offline  
Sponsored Links
Advertisement
 
#2 Old 05-04-2007
DansSlk
Guest
 
Posts: n/a
Chats:
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
So basically then you are using the stock speakers with an aftermarket HU the BOSE is totally disconnected from the system right?

Not sure what you mean by shorted the wires for the speakers? I cant make much sense of that could you run it past me again please.

Depending on whats actually going on they could be related if you have not got the setup quite right but if the trunk light is staying on then the microswitch is probably bust and that could be keeping the car awake, the SRS is a little more complicated to figure out really need to know a fault code for that
#3 Old 05-05-2007
Registered Users
 
bazzle's Avatar
 
Join Date: Jun 2006
Location: Melbourne Australia
Vehicle: slk230 1998
Other Toys: Mercedes A Class W169, A 200 E Sport, (Cazzles)
Posts: 208
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 1
Thanked 35 Times in 10 Posts
Ensure you have removed the power to the Bose amp.
It still shouldnt affect anything though.
I assume you joined the new amp to the existing speakers. They are 2 ohms so as long as new headunit is happy with that then all is normal.

Check PSE unit in boot is dry.
http://www.benzworld.org/forums/r170...fit-check.html

Bazzle
bazzle is offline  
 
#4 Old 05-07-2007
Registered Users
 
Join Date: Jan 2007
Location: California
Vehicle: SLK 320 2001
Posts: 4
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
(Thread Starter)
More detailed information

Let me clarify what I did. I removed the amplifier physically and didn't put another one. By bypassing the wires I meant connecting the wires that come from the speakers to the amplifier and then from the amplifier to the old radio. Now the speaker wires run directly from the speakers to the new radio beacause I am not using the amplifier at all. The new radio has 4x50 Watts MOSFET and it works very good.

On the SRS light: I linked the car to Equus Innova 3120 OBD-II reader which can read most error codes and it says there are no error codes, no frame data, nothing, but the SRS light is still on.

On the quiescent current: I measured the quiescent current in more detail and here are the results:
Fuse #9 Roof light, hotn, anti-theft alarm, trun light 0.86A (0.16A when removed the trunk light bulb)
Fuse #18 E-call 0.28A
Fuse #35 Radio frequency remote control, hazard warning flasher, instrument cluster, tempmatic 0.06A

I read that the nominal value for quiescent current is <=0.05A(50mA) for the whole car and it has 0.5A even when the trunk light bulb is disconnected (1.2A when connected)
ventzi75 is offline  
#5 Old 05-07-2007
DansSlk
Guest
 
Posts: n/a
Chats:
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
OK so with that setup i think we can say your audio system is not causing the problem and the info you have posted confirms that.

Like Bazzle said check your PSE all three of the fuses you have posted can be tied back to it because of the alarm.

With the SRS i am not even sure if the unit is hooked up to OBD in the 170 from memory because its a very pre-integration car so it might need a break out box to test them or a MB specific tester DAS(HHT)/CarSoft MB
#6 Old 05-09-2007
Registered Users
 
Join Date: Jan 2007
Location: California
Vehicle: SLK 320 2001
Posts: 4
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
(Thread Starter)
I removed the PSE and checked the circuit for corrosion. There were no signs that water has ever been there. There was already a black plastic bag around the whole PSE, probably from the previous owner or the dealers, can't tell. What I noticed is that there is a black marker line less than an inch long on the bottom of the circuit, see attached picture. I'll remove that marker line and spray the circuit with protective coating. Since now the whole unit is disconnected I will measure the quiescent current again and see if there is any change. Is it ok to connect the battery when the PSE is removed from the car?
Attached Images
File Type: jpg IMG_1700.jpg (170.4 KB, 97 views)
ventzi75 is offline  
#7 Old 05-19-2007
Registered Users
 
Join Date: May 2007
Location: Woodstock, NY
Vehicle: 2001 SLK320MT Sport
Posts: 1
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
If you disconnected the wiring under the pasenger seat that controls the "baby smart" SRS disconnect, you may not have reseated the connectors. I'd check those connections.
lukew is offline  
#8 Old 05-19-2007
 
Join Date: Mar 2007
Posts: 1,006
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Bazzle, seeing you post made my week.
412driver is offline  
#9 Old 05-20-2007
Registered Users
 
Join Date: Mar 2007
Location: Paris
Vehicle: SLK 55 AMG
Posts: 608
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 13
Thanked 41 Times in 27 Posts
Send a message via MSN to Zeiser50
The black marker line is only here to garantee that the manual check has been done : close to this marker line, there is two solder which can not be done autmatically. An manual process is needed. This marker line ensure that the manual control of this manual operation has been done.
Nothing linked to your problem.
Zeiser50 is offline  
#10 Old 11-08-2015
Registered Users
 
Join Date: May 2012
Location: Vienna, VA
Vehicle: 1998 SLK230, 2000 SLK230, 2012 SLK250
Other Toys: Tennis Racquet
Posts: 160
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Thanks: 14
Thanked 11 Times in 11 Posts
Whatever happened with PSE problem?

Hi,

I read your post about changing your stereo and the battery drain problems that resulted.

I'm having the exact same problem you described, on fuse #9 , not the horn, not the dome, not the trunk so must be something about the alarm.

I'm about to check PSE, but I wonder if you can follow up on your post from 8 years ago and tell us how it turned out. You pulled out the circuit board and you were going to spray it with some kind of protector.

Thx in advance.
mightycpa is offline  
#11 Old 11-08-2015
Administrator/Founding Member

 
jbanks15's Avatar
 
Join Date: Jun 2006
Location: Tampa, Florida
Vehicle: 2009 SLK 55 AMG Kleemann Supercharger, ECU tune, Headers and LSD, CF Diffuser
Posts: 92,278
Country:
Chats: 38
Mentioned: 477 Post(s)
Tagged: 5 Thread(s)
Quoted: 6604 Post(s)
Thanks: 3,254
Thanked 11,148 Times in 8,496 Posts
Thread is 8 years old but fortunately the poster was on a few months ago and hopefully will reply.

just an fyi thread:

https://www.slkworld.com/new-members-...d-how-fix.html


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Jeff, US Army Master Sergeant Retired
Administrator/Founding Member
2009 SLK 55 AMG Black/Black
Kleemann Supercharger thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Kleemann ECU Tune, headers and downpipes thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Albums:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

ClearBra
OEM MB Plexiglass Draught Stop
Smarttop version 3.22
Previous - 02 SLK 320, 05 SLK 350
jbanks15 is online now  
#12 Old 11-08-2015
Registered Users
 
Join Date: May 2012
Location: Vienna, VA
Vehicle: 1998 SLK230, 2000 SLK230, 2012 SLK250
Other Toys: Tennis Racquet
Posts: 160
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Thanks: 14
Thanked 11 Times in 11 Posts
Thanks, actually, I sent a PM, but I also filled in an optional box (Trackbacking) that I am thinking put the post here too.

Anyway, this is indeed my problem too. As soon as I removed the power harness, my battery drain dropped down to a fairly steady 0.03 Amps. The PCB is corroded, especially at the connections, like an old AA battery was in there. It needs a good scrubbing. I'm going with a soft toothbrush, some water and baking soda for abrasion, and maybe an alcohol rinse at the end.

The only improvement I would make to bazzle's disassembly instructions for the PSE are on hist Step 6 and associated picture. I mistakenly assumed that you need the screwdriver to remove those clips. You don't. What really helps is light, especially down there in the dark recesses of the wheel well.

To remove the clips, press the top of the connector, and it will depress like a spring. Tilt the retaining clip forward (shown in bazzle's picture) and the locking mechanism will become self-evident, and you'll have no problem taking out the two connectors secured like that. The other two harnesses are pretty straightforward.
jbanks15 likes this.
mightycpa is offline  
#13 Old 11-08-2015
Administrator/Founding Member

 
jbanks15's Avatar
 
Join Date: Jun 2006
Location: Tampa, Florida
Vehicle: 2009 SLK 55 AMG Kleemann Supercharger, ECU tune, Headers and LSD, CF Diffuser
Posts: 92,278
Country:
Chats: 38
Mentioned: 477 Post(s)
Tagged: 5 Thread(s)
Quoted: 6604 Post(s)
Thanks: 3,254
Thanked 11,148 Times in 8,496 Posts
you think you sent a pm. you only have 12 posts and need 15 posts to send a pm. it did not go anywhere

If you wish to become PM (Private Message) capable, you need 15 posts. To get those 15 posts quickly, just go to the ‘New members introduce yourself here’ section and welcome enough new members to obtain your needed posts to PM.

set your options to keep a copy of 'sent' private messages


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Jeff, US Army Master Sergeant Retired
Administrator/Founding Member
2009 SLK 55 AMG Black/Black
Kleemann Supercharger thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Kleemann ECU Tune, headers and downpipes thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Albums:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

ClearBra
OEM MB Plexiglass Draught Stop
Smarttop version 3.22
Previous - 02 SLK 320, 05 SLK 350
jbanks15 is online now  
#14 Old 11-08-2015
Registered Users
 
Join Date: May 2012
Location: Vienna, VA
Vehicle: 1998 SLK230, 2000 SLK230, 2012 SLK250
Other Toys: Tennis Racquet
Posts: 160
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 45 Post(s)
Thanks: 14
Thanked 11 Times in 11 Posts
Quote:
Originally Posted by jbanks15 View Post
you think you sent a pm. you only have 12 posts and need 15 posts to send a pm. it did not go anywhere

If you wish to become PM (Private Message) capable, you need 15 posts. To get those 15 posts quickly, just go to the ‘New members introduce yourself here’ section and welcome enough new members to obtain your needed posts to PM.

set your options to keep a copy of 'sent' private messages
I'll say it this way:

It didn't stop me.
It didn't warn me.
Maybe my PM attempt redirected me here, I don't know.
One way or the other, it did post here.
jbanks15 likes this.
mightycpa is offline  
#15 Old 11-08-2015
Administrator/Founding Member

 
jbanks15's Avatar
 
Join Date: Jun 2006
Location: Tampa, Florida
Vehicle: 2009 SLK 55 AMG Kleemann Supercharger, ECU tune, Headers and LSD, CF Diffuser
Posts: 92,278
Country:
Chats: 38
Mentioned: 477 Post(s)
Tagged: 5 Thread(s)
Quoted: 6604 Post(s)
Thanks: 3,254
Thanked 11,148 Times in 8,496 Posts
do this anyway for when u get to 15 so you will know if you sent a pm

usercp
edit your options
scroll down to private message section
check the box to 'keep' a copy in 'sent' folder



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Jeff, US Army Master Sergeant Retired
Administrator/Founding Member
2009 SLK 55 AMG Black/Black
Kleemann Supercharger thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Kleemann ECU Tune, headers and downpipes thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Albums:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

ClearBra
OEM MB Plexiglass Draught Stop
Smarttop version 3.22
Previous - 02 SLK 320, 05 SLK 350
jbanks15 is online now  
Sponsored Links
Advertisement
 
Reply

  Lower Navigation
Go Back   Mercedes Benz SLK Forum > Mercedes Benz R170 SLK Class Cars > SLK R170 General Discussion

Bookmarks

Quick Reply
Message:
Options
Upload your files to MEGAUPLOAD
Upload your images to ImageShack

Register Now



In order to be able to post messages on the Mercedes Benz SLK Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Radio Amp dead (Bose) - Help? Midnight Son Where to get R170 SLK Items 1 03-09-2008 12:53 PM
Looking for Quick Help! Wheel Related MarkR171 General Modifications R171 20 09-08-2007 11:34 AM
Slk 320 myslk230 Where to get R170 SLK Items 2 01-26-2007 12:48 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 

Clubs, Garage Plus vBulletin Plugins by Drive Thru Online, Inc.