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Registered 1998 SLK200
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59 Posts
Discussion Starter #1
After some battery issues in about -20c (-4F) weather my SRS light came on, same time as my ABS and ESP came on.
ABS and ESP cleared itself, but the SRS wont.
I understand that it low voltage can trigger the SRS-light and that it wont clear itself?

Any easy or cheap way to clear it myself? Ive seen others buy the iCarsoft-thing to clear it, but if i want the iCarsoft CR Pro(might be handy on other cars), it sets me back about 320 USD here in Norway.
Can I buy for example a cheap bluetooth-OBD2 reader to clear it somehow?
 

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Super Moderator (Canada)
2012 SLK55 AMG w/P30 "Schwarzie"
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16,337 Posts
SRS cleared by dealer only (unless you have DAS (Diagnostic Assistance System/SDS--Star Diagnostic System--> $$$).

Regular scanners we have will (usually) clear some/most codes but not SRS as it's a safety-related issue.

Or so I've been told 😉
 
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Registered 1998 SLK200
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59 Posts
Discussion Starter #3
Ive seen stuff like the movie under, where they clear the SRS error om a different Mercedes using an iCarsoft.
No idea what its called, but its not really a reguler OBD2-reader, and not at all priced as one either :p

 

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Super Moderator (Canada)
2012 SLK55 AMG w/P30 "Schwarzie"
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16,337 Posts
Always willing to stand corrected 😉

I see on another forum that the iCarsoft MBII for MB will do it. Always believed it was only dealer.
Maybe @Dave2302 can enlighten.
 

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Registered 1998 SLK200
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59 Posts
Discussion Starter #5
I see on another forum that the iCarsoft MBII for MB will do it. Always believed it was only dealer.
No idea.
I know there are one only for MB, but that would be useless for me if i get another car, so i figured it would be better to spend a bit more to get one that can do most brands. But I have really no idea how of if they workhow i expect them to.
But another cheap way to clear it without going to a dealer would be good. If it turns out to be a bad wire or something and i go to the dealer to clear it it would be multiple trips, and for probably 50$ a trip it might come close to the iCarsoft thingie..
 

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Super Moderator (Canada)
2012 SLK55 AMG w/P30 "Schwarzie"
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16,337 Posts
Wait till Dave replies before doing anything (remember time differences around the world). He's one of the guru's for your R170 (y)
 
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Premium Member 2001 SLK200K/2001 SLK320
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2,653 Posts
Always willing to stand corrected 😉

I see on another forum that the iCarsoft MBII for MB will do it. Always believed it was only dealer.
Maybe @Dave2302 can enlighten.
ICS MBII will reset the SRS Light on the Post-FL for definite, I've done it.
Not sure on the Pref-FL but you'd probably (definitely maybe?) need the ICS 38pin Cable and NOT a generic cable..

Take it to the stealership and get them to do it
 

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Premium Member 2002 R170 SLK V8 5.0
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4,513 Posts
I have never tried it on a 38 pin car, I doubt much other than SDS will be able to reset it ............................

Many Dealerships are likely to fleece you and tell you the car needs new SRS Module etc etc :(

As @M4rCu5 says iCS might, but I definitely agree with him you will need the correct iCS 38 pin lead, and afaik they are unobtainable :(

As per your Video, iCS does work much better on later MB's but even then it is only a reader / resetter, R170 is old skool MB, it uses a separate wire for every module, hence the 38 pin sockets on earlier cars, later cars are diagnosed via CAN Buses which the connection is present on the 16 pin DLC, but not even on 16 pin (facelift) R170, they have to have a certain program called HHT-Win or an original MB HHT, for lots of the Modules, DAS Program for others, all of which is only found on SDS.

Snap On, (which a lot of regular Garages have) will reset most MB's, again not tried SRS on a 38 Pin Car, Foxwell is the same, may or may not, there is a 38 pin optional lead available for Foxwell, Foxwell has proved very good on W220 S Classes, but they have 16 pin !! I'm awaiting for the results from a mate who is gonna test a Foxwell on some 1990's 38 pin Cars before I blab about it on here, specifically we want to know what it can do with the Modules that require HHT Win on SDS, this is the latest update NT510 Foxwell I'm referring to btw ;)

i figured it would be better to spend a bit more to get one that can do most brands.
No one machine will do all on all marques, MB's in particular require dealer Level kit which is SDS if you are a serious DIY'er ;)
Thankfully a DIY SDS set up costs around £450 - 550 compared to a low end Snap On at £2000, or an Autel at circa £900, neither of which will do what the SDS does, and I'm talking essential procedures like Version Coding, Guided testing, Parts Location etc plus plus plus ;)

Other £30 - 600 stuff, forget it it will just lead ya up the "garden path" on wild goose chases.
Cheapo (under £100) OBD is useless on any Car, all they will access is a handful of Engine Codes !!

HTH :)
 

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Registered 1998 SLK200
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59 Posts
Discussion Starter #9
What im reading is to basicly forget about it and pay a small fortune for a dealership spend 2 minutes to clear it?
Does it have to probably be a merceds dealership or can basicly anyone do it? mercedes dealer are even more overpriced :(
I like DIY but not to the extent that i will use 450-500$(probably twice that over here) to fix a hopefully one-time issue and that dont really have that much other uses on other cars.

I have time to wait if you get the results fairly soon, but i kinda have to fix the light before summer due to periodic safety testing, and a SRS light are an automatic failure.

Thanks for the help so far :D
 

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Premium Member 2002 R170 SLK V8 5.0
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4,513 Posts
2 trips to a dealership will cost you at very least half that SDS price, a couple of Faults and you could waste 4 + times SDS price on un-necessary parts.

You need a Dealership or an Independent MB Specialist who should have SDS or drive around different Independent Garages and ask them if they have a decent Snap On, Bosch, Autel, Autologic etc and if they can try and reset it ........................

Of course, then begs the question why is the Light on in the first place, which likely means there is a Fault with ABS System, I've had Batteries disconnected / flat and never had to reset SRS just because of a Low Voltage scenario !!

Any Mercedes owner, (just as if he owned a BMW or Ford or anything else), there is certain specialist equipment that is really a must have, unless he want's to keep paying Garages / Dealers or a ton of messing about ;)

HTH :)
 

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Premium Member 2001 SLK200K/2001 SLK320
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2,653 Posts
What im reading is to basicly forget about it and pay a small fortune for a dealership spend 2 minutes to clear it?
Does it have to probably be a merceds dealership or can basicly anyone do it? mercedes dealer are even more overpriced :(

I have time to wait if you get the results fairly soon, but i kinda have to fix the light before summer due to periodic safety testing, and a SRS light are an automatic failure.
I'd ring MB to ask them how much they'll charge to reset the SRS, instead of guessing a $$ number.

We know that iCS, Autel MD xxx and Foxwell will reset the light on the Postie 16 pin OBDII, the problem is that 38pin lead, or getting a hold of one, trying it and then finding out that it doesn't work on the (slightly more primitive) Pre-FLs ..
 

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Premium Member 2002 R170 SLK V8 5.0
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4,513 Posts
And, finally it takes longer than 2 minutes, way longer, SDS is not some EBay £30 OBD reader which is worse than useless ;)
 
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Registered 2001 SLK320
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856 Posts
I agree with @Dave2302 .
SDS is worth the money, specially if the right guy take care of the software.
And if you choose to sell your MB, It should be rather easy to sell the SDS system and get your money back.
 

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Registered 1998 SLK200
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59 Posts
Discussion Starter #14
2 trips to a dealership will cost you at very least half that SDS price, a couple of Faults and you could waste 4 + times SDS price on un-necessary parts.
Thats kinda why i want someting to reset it myself the first place :)

You need a Dealership or an Independent MB Specialist who should have SDS or drive around different Independent Garages and ask them if they have a decent Snap On, Bosch, Autel, Autologic etc and if they can try and reset it
Any link to an SDS?
All i can find when I google for them is SDS is impact drills :p

Of course, then begs the question why is the Light on in the first place, which likely means there is a Fault with ABS System, I've had Batteries disconnected / flat and never had to reset SRS just because of a Low Voltage scenario !!

Any Mercedes owner, (just as if he owned a BMW or Ford or anything else), there is certain specialist equipment that is really a must have, unless he want's to keep paying Garages / Dealers or a ton of messing about ;)

HTH :)
I changed battery yesterday, and found out one of the cable running from positive was loose(the thin one of the two) and the threds was damaged so tightening it was impossible. It was so loose that i could wiggle it around some, and of course, it was alot of dirt so probably really bad connetion. Ive fixed both now, and installed a new, stronger battery.
I have no idea what the cable are for, but i imagine it can be for stuff like ABS and airbag (would explain why both came on at the same time after starting-issues)
loose cable + bad battery might have resulted in a low or even no voltage on that cable.
 

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Premium Member 2002 R170 SLK V8 5.0
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4,513 Posts
My advice is to pm @i860 on this Forum, and take his advice .....................

This is the sort of kit you need, can also use a C4 kit, but I have no knowledge of the seller and of course you need a dedicated laptop to put the HDD in, like I say this is just an example to illustrate what ya need, don't go buying anything until you've spoken to i860 ............

 

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Registered 1998 SLK200
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59 Posts
Discussion Starter #16
This got ALOT more complicated that i expected.
Im gonna let a local dealer clear it if they can, at least once. I dont think it will come back if its deleted.
In unqualified opinion is that its all due to the battery issue, or just a freak coincidence that ABS, ESP and SRS went on at the same time i couldnt start randomly.
 

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Registered 1998 SLK200
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59 Posts
Discussion Starter #17
Just got my car from the garage.
They say they tried to clear the codes, but cant for some reason.
I drove my car back and notice, yeah, its gone anyways, well spent 100$

But then i decide to restart to check, and the light doesnt light up at all now, not even at the initial checkup where all lights are suppose to light up.
Any idea?
Anyway, probably got to take it back.

Got the error codes:
DTC 003 - Circut 15R; to high or low voltage
DTC 218 - unknown
DTC 208 - unknown
DTC 026 - seat detection error: programing error

The codes are translated by me from norwegian, so might not be identical to the actual error messages registred to the codes..
 

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Premium Member 2002 R170 SLK V8 5.0
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Unknown DTC's are usually as a result of not using an SDS Machine.

The Seat Detection Error : Programming error could be that the SRS Module has been replaced at some point and not Version Coded correctly, again, only SDS can sort that out.

Ckt 15 Error suggests weak Battery, perhaps Ignition Switch or maybe K40 issue, (I canna remember whether K40 has any involvement in SRS Ckt, I'd be looking (with SDS) in other Modules for low voltage codes.

If the battery is an unknown quantity or 2 years + old, I think I'd pro actively replace it, just because it cranks and starts the Engine don't mean it's good ;)

HTH :)
 

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Registered 1998 SLK200
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59 Posts
Discussion Starter #19
If the battery is an unknown quantity or 2 years + old, I think I'd pro actively replace it, just because it cranks and starts the Engine don't mean it's good ;)
As ive said before, i have replaced it, and i found a wire on the battery terminal that wasnt connected properly. Battery is now about a week old :)
The wire was attached properly.
As it SRS-light turned on during starting problems its expected to find at least voltage problems.


But the SRS-light itself are suppose to light up when i turn the ignition, right? Cant remember how it was before.
I mean at the initial startup check where all the lights light up, it doesnt light up at all..
 

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Premium Member 2002 R170 SLK V8 5.0
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4,513 Posts
As ive said before, i have replaced it, and i found a wire on the battery terminal that wasnt connected properly. Battery is now about a week old :)
The wire was attached properly.
Oh, OK pardon me for being busy, trying to be helpful and obviously not reading chapter and verse ;)

Hope ya get it sorted soon ;)
 
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