ASR Light on

[jaymanek]

Hi All,

Ok ive come a bit stuck on the SEC.

The ASR light comes on randomly...

It doesnt necessarily do it when i press the brake, so should i rule out the brake pedal switch? For example last night it came on doing 70MPH (ish) on the motorway.. sometimes it doesnt come on at all..

The ABS light is not on so im thinking its not a wheel sensor.

My radiator blew the other week and water went everywhere... I have been around all the control units with the air line, but no change..

Any other ideas?

Thanks!

 

[jaymanek]

anyone?

 

[television]

see what i can find later

 

[jaymanek]

thanks, looking through the manual, the only things i can come up with as suspects are OVP, Brake Switch, Dodgy connection somewhere?

 

[Will]

Not particularly familiar with the ASR on 126s specifically, but when the light comes on, does it stay illuminated to indicate a fault, and if so can you read the fault code to more closely pinpoint the likely culprit?

I'm comparing to the ASD warning light and the fault codes from 201s here. FWIW, I think the brake light switch is a relatively common fault, very cheap to replace and easy to change. If you are clutching at straws it wouldn't be the end of the world to replace it regardless I guess?

Will

 

[television]

I have a slight problem ASR was not invented and used until 1991

 

[Will]

Is this specifically on the 126 Malcolm or any MB?

I'm sure ASR was around before '91?

Will

 

[television]

Is this specifically on the 126 Malcolm or any MB?

I'm sure ASR was around before '91?

Will

Well I have it here that it was first used on any MB in 1991

ABS 1984
ASR 1991
ETS 1994
ESP 1996
BAS 1998
SBC 2002

 

[Will]

Fair enough Malcolm, I wonder if Jay's car has been modified to have it retrofitted then? Seems very odd though.

Sure I've seen/heard of ASR on older MBs before.

Will

 

[Will]

http://www.barons-auctions.com/details.php?lotpath=lots/F702EBO.htm

The VIN on that car shows ASR on the russian 'EPC' site - or is that an earlier system (ASC?)

Will

 

[television]

Fair enough Malcolm, I wonder if Jay's car has been modified to have it retrofitted then? Seems very odd though.

Sure I've seen/heard of ASR on older MBs before.

Will

For fans of traction control, 1991 was a big year as Mercedes' ASR system became optional on the 300E, 300TE and 300CE.


This is part of http://www.edmunds.com/insideline/do/Features/articleId=100320

 

[Will]

For fans of traction control, 1991 was a big year as Mercedes' ASR system became optional on the 300E, 300TE and 300CE.


This is part of http://www.edmunds.com/insideline/do/Features/articleId=100320

Yes, but isn't that the E-class, AKA 124 in that year?

Will

 

[Will]

Quick yahoo search - 'ASR introduced 126'

http://www.s-klasse-club.de/gb/kaufberatung.html

'The 126 was not only the flag ship of Mercedes-Benz, but also a forbearer of new technology, leading the world of old-timers into a new future. Pyrotechnically operated seatbelt tensioners and the drivers airbag were introduced to a production car for the first time in 1981, in a 126 S-class. Another new feature was the ABS antilock braking system, introduced in the latest 116 series. ASR and the passenger airbag, introduced in 1986, continued this chain of innovations.'

Not sure if this is accurate though?

Will

 

[television]

I think that Jays car has the wrong cluster this is from Ebay USA

​

MERCEDES 300E 89 - 90 126 Type, (head only), (300SE & SEL), US
MERCEDES 300E 91 - 91 126 Type, (head only), (300SE & SEL), w/o ASD limited slip or ASR traction control
MERCEDES 560 89 - 90 126 Type, (head only), (560SEC & SEL), US
MERCEDES 560 91 - 91 126 Type, (head only), (560SEC & SEL), w/o ASR traction control

Our Part# 257-58770-G50389
Our Inventory Notes: 0

Need Help?​

 

[television]

Yes, but isn't that the E-class, AKA 124 in that year?

Will

But it is the same thing on every model

 

[television]

Quick yahoo search - 'ASR introduced 126'

http://www.s-klasse-club.de/gb/kaufberatung.html

'The 126 was not only the flag ship of Mercedes-Benz, but also a forbearer of new technology, leading the world of old-timers into a new future. Pyrotechnically operated seatbelt tensioners and the drivers airbag were introduced to a production car for the first time in 1981, in a 126 S-class. Another new feature was the ABS antilock braking system, introduced in the latest 116 series. ASR and the passenger airbag, introduced in 1986, continued this chain of innovations.'

Not sure if this is accurate though?

Will

this one says ABS in 1981, and thats not possible

 

[television]

This link is handy

http://www.kfztech.de/abc/kfztechnikabcAL_AW.htm#ASR

 

[grober]

As far as I know ABS ASD and ASR were available as options on the w126 saloons and coupes from the 1985 facelift models onwards. First thing I would suggest is replacing your OVP and checking your battery since these units are voltage sensitive. Unfortunately the ASR sytem is linked to the electronic throttle controls/ tempomat cruise controls and any faults there might give you an ASR fault light also. Normally a faulty electronic throttle would reveal itself as a dead pedal and limited power but an intermittant fault -who knows??


EDIT ;- there were several versions of the ASR system which gradually increased in sophistication so maybe some of the introduction dates given refer to different versions/revisions of ASR ???

 

[Will]

http://en.wikipedia.org/wiki/Mercedes_Benz

'Anti-lock brakes (ABS), traction control and airbags in the European market, were all Mercedes-Benz innovations. These technologies were introduced in 1978, 1986 and 1980 respectively'

I'm never too sure on the reliability of any 3rd party web sources, but I'm sure I've seen and heard of ASR before '91 at least.

Hopefully some other 126 owners may be able to offer more?

Will

 

[television]

As far as I know ABS ASD and ASR were available as options on the w126 saloons and coupes from the 1985 facelift models onwards. First thing I would suggest is replacing your OVP and checking your battery since these units are voltage sensitive. Unfortunately the ASR sytem is linked to the electronic throttle controls/ tempomat cruise controls and any faults there might give you an ASR fault light also. Normally a faulty electronic throttle would reveal itself as a dead pedal and limited power but an intermittant fault -who knows??


EDIT ;- there were several versions of the ASR system which gradually increased in sophistication so maybe some of the introduction dates given refer to different versions/revisions of ASR ???

Sorry but you are not correct it came 1991 the link below gives it all
http://www.bentleypublishers.com/gallery.htm?code=GMOB&galleryId=618


ASD was introduced on diesel engine cars as an option beginning in 1991. This electrohydraulic controlled rear differential automatically transfers driving power to the rear wheel with more grip. ASD is active up to approximately 19 mph.

On slippery, adverse road conditions, the ASR system electronically reduces engine power and/or applies the brakes to the driven wheels to maintain the greatest traction possible during acceleration or cornering.
ASR was introduced on gasoline engine cars (except 4MATIC models) as optional equipment from model year 1991. ASR was standard equipment on the 500E.







I know that I am quite new here but the arguments with any fact or reason
like on 3 speed gearboxes that do not exist and now this.

Believe me I am very sure before I stick my neck out on the things