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1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter · #1 ·
MB service advisor tells me that SRS is throwing of 2 codes:
1. 900B - passenger side seat belt buckle
2. 9243 - passenger side airbag ignition squib.
the car has about 37K miles.
How difficult is it to fix these two issues?
I had bought the SDS from ebay, but for some reason my xentry software
is deactivated, and that guy who sold me the software and hardware is gone as well.
Any help would be great.
thanks
 

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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The side air bag squib error is very common. The wiring harness that runs through the seat to the airbag stretches as you articulate the seat back for rear access. The driver's seat on mine does this a few times a year. You can remove the seat back and try to manipulate the wiring harness to get some slack, but it's really very tight. I don't know about the seat belt error - that could be a true failure, or it may have just been intermittent and go away if you clear the errors.

On your SDS, did you get the "Chinese Clone" with the multiplexer and the hard drive with the VMWare setup? If so, you will need to set the date back on the virtual machine to something like 01/01/2011 in order to use it. SDS expires to make sure the shops keep the most current software. Also, I have better luck going starting into "DAS" instead of the Xentry menus. This is the shortcut I run:

C:\Programme\DAS\Bin\DAS32R2.exe -lgb
 

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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No pics, but it's super-easy. On the seat back, at the very bottom, under the map pocket, there are two TORX screws. Remove them, then the back will slide down and off. You can then trace the wire from the airbag itself, and you'll probably find it to be very tight at the pivot point on the seat.
 

· Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter · #5 ·
Thks, I will try this weekend. So, do I disconnect the battery or anything like that before
I do this? I am unplugging anything or just try to create some slack?
Is there anything in the door panel that is an issue?
And, after that I try to erase the code? and see.
I tried your method of using the xentry but now it says that the unit cannot communicate.
I am using a T61 laptop with PCMCI serial port which shows to be present.
So, I am using auto enguinity with enhanced MB coverage and it read the two codes.
900B and 9243, erased 900B but 9243 will not erase. This is prior to removing the back seat cover.
 

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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There is no power to the SRS system with the ignition switch off, so you really don't have to disconnect the battery unless you are doing other wiring, in which case a crossed wire might energize a squibb and "BOOM!" You probably won't have to disconnect the SRS wiring harness - I was able to move the wires on mine around to get enough slack and then I just pushed the connector in more tightly.

On the Xentry/SDS problem, I suspect it's the serial port. My understanding is that the multiplexer hardware interface is very specific and wants a "real" port. I have mine on a Dell Latitude D630 with a hard serial port and it works fine. If you can get your hands on a computer with a hard serial port, you can run the system off the portable hard drive to test to see if it's the port or the multiplexer.
 

· Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter · #7 ·
Ok, will try that. I don't think I have any laptop that has a hard wired serial port.
So, if I found a laptop with serial port, I remove this hard drive from my laptop and use
it as an external drive and the program will launch which is specifically for IBM/Lenovo T61and so I thought it is specific for T61 drivers etc.
This guy who sold me this unit, told me to get T61, which I went and bought but did
not tell me that the laptop must have a serial port.
Let me know
Thanks
 

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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Oh, so you SDS on an internal hard drive specifically for the IBM T60? The system I bought came with an external hard drive and SDS installed on a VMWare virtual drive. It can run on pretty much any PC - you run the VMWare player, then have it fire up the SDS virtual machine. So, no, I don't think you;d be able to just remove the T61's HD and use it in another computer, unless it's another T6x with a hard serial port. If you want, I'd be glad to make a copy of the external HD I have - you'd have to send me an external USB drive that can hold at least 80GB. If you're interested, just let me know. The VMWare setup may actually work with the PCMCIA card because it remaps the hardware. The virtual machine will see that as a BIOS-level device. Worst case, you can at least test the multiplexer on another computer to make sure it works.
 

· Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter · #9 ·
Ok. I tried USB to serial, says cannot communicate with the unit.
So, I bought PCMCIA to serial, still same problem.
In both cases, a serial port com1 shows in device manager.
Was wondering how to know for sure if I have a bad unit
or issue with serial port.
Let me see, if I can find a hard drive to send to you.
Can u email me your mailing address, mine is [email protected]
thank u so much for helping me.
I can pay you of mailing me back the hard drive by paypal
thanks
 

· Registered
1990 300CE-24, 2000 ML55, 2005 CLK320 Cabriolet
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142 Posts
Discussion Starter · #10 ·
It is actually T61 laptop. It says Lenovo which I think bought IBM thinkpad line of laptops. The hard drive sent to me has Windows XP specific to T61.
So, will your program work with this T61 laptop or I really need a different laptop
with hard wired serial port? what OS do I need, Windows XP or Windows 7?
So, which laptop I need to buy which has serial port?
 

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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Barry, you've got PM! :) My guess is that we may be able to make this work ont he T61. I PM'ed this to you, but I thought others might benefit:


The SDS/Xentry system I bought came with the multiplexer and an 80GB external hard drive that contains the VMWare player and a virtual machine with the SDS software already installed on configured. In case you aren’t familiar with virtualization technology, it basically is a way to run a “computer within a computer”. There are two popular programs that do this – Microsoft Virtual PC and VMWare. Microsoft Virtual PC has a few other flavors you may have heard of: Hyper-V (designed for Windows Servers) and XP Mode (designed to integrate XP-only programs into Windows 7).

Anyhow, virtualization technology takes a section of memory on the host computer and makes it look like its own private PC. The memory allocated is kept totally separate from the host’s operating system. A big file on the host’s hard drive is used as the virtual machine’s hard drive. The virtual machine has its own a BIOS, hard drive controller, video card, etc. all emulated by the virtualization software. Of course these are all very generic hardware emulations, but the beauty of it is that every virtual machine on every host PC pretty much looks to the running programs like the exact same hardware. So, instead of software and operating systems having to be configured with drivers for different hardware, a virtual machine runs the same on any host. You can take that virtual hard drive file and copy it to any computer, fire up the virtualization system and it will run exactly the same. That’s how the Chinese cloners distribute SDS – they create a virtual machines, install and configure it, then just backup the big file to an external hard drive. Then you just copy the file to your PC’s hard drive, fire up the virtualization program (they use VMWare player) and you’re in business. The VMWare program can map the host’s serial ports to the virtual machine’s ports at a BIOS level . If you use a PCMCIA or USB-to–RS232 port, it might not work on the native machine because it’s not BIOS-level hardware, but it actually work through virtualization because Xentry on the VM will see that as BIOS-level hardware because the entire computer is emulated.
 

· Registered
2005 CLK500 CABRIOLET
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8 Posts
I have SRS light on as well and.... soft top wont go down. Can these problems be related? When I pull the "top down" switch the windows go down but nothing else happens. I have inspected under the seats for loose or broken wires. I have taken the seat back off as you instructed and everything "looked" good?????? Hep! 2005 clk500 cabriolet.
 

· Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550 FORMER: C300, ML350, CLK550 Cabriolet, C240, ML320, 300TD
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I don't believe the soft top operation and SRS problems are related. I've been able to operate the top with an SRS error caused by the side bag wiring error. My guess is that you have a bad microswitch on the soft top, but also check the fluid level in case you have a leak.

As for the SRS error, if it is the side bag wiring, then manipulating some slack in it will fix it, but you will still need the error reset with SDS or a high-end scan tool that can read MBZs systems. And in doing that, I'd go ahead and get error codes pulled from the soft top controller so we know what's going on with it.
 
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