RE: BAS/ASR Light on

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RE: BAS/ASR Light on

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Mercedes Forums >> Mercedes Benz Models >> Mercedes SLK Class >> RE: BAS/ASR Light on

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RE: BAS/ASR Light on - 1/14/2007 1:56:09 AM

snanceki

Posts: 2179
Joined: 12/11/2004
Status: offline

Cause: order of likelyhood.

Faulty Brake light switch. 2 circuits.
Faulty / dirty speed sensor wire. usually front.
faulty speed sensor connector. corrosion/water
Incorrect tyre size or differential tyre wear.

Bazzle could be spot on.

(in reply to paulie)

Post #: 21

RE: BAS/ASR Light on - 1/14/2007 1:58:09 AM

snanceki

Posts: 2179
Joined: 12/11/2004
Status: offline

Not the most common cause BUT Bazzle could be spot on.
Stuart

(in reply to paulie)

Post #: 22

RE: BAS/ASR Light on - 2/17/2007 12:08:32 AM

ajponce

Posts: 10
Joined: 2/2/2007
Status: offline

I also have a 99 slk and the BAS/ASR came on the other day. I think its because i had put 3 pizza boxes on the passenger seats. I don't know if this is of any help to you but mine just went away when i shut off the car and restarted it.

Good Luck!

(in reply to coolhuh)

Post #: 23

RE: BAS/ASR Light on - 2/22/2007 11:53:41 PM

slk230red

Posts: 36
Joined: 2/10/2004
From: United States
Status: offline

quote:

ORIGINAL: paulie

Hi guys, Snanceki is spot on with his first reply to this post, the bas/asr are all conected and the problem with the lights staying on and no cruise control. Just replace the brakelight switch which is located at the top of the brake pedal just in behind the cover. 10 min job. I had the same problem with my merc and the brakelight switch sorted it.

I just went through this on my 2001 SLK230. The BAS/ESP light would come on when I put my foot on the brake pedal and my brake lights wouldn't work. I reset the brake stop switch at the brake pedal and that fixed the problem. I went directly to the dealer and purchased a new brake stop switch and replaced it.

Dave

_____________________________

2001 SLK230 42,000 miles (bought new).
1993 190E 87,000 miles (bought new...Great car!)
1971 Corvette 454 Roadster/Conv. (Owned for 33 years.. still running strong).

(in reply to paulie)

Post #: 24

RE: BAS/ASR Light on - 6/30/2008 11:23:32 AM

kaveh.afshari

Posts: 2
Joined: 6/30/2008
Status: offline

Hello,

I have a 1998 SLK230 (automatic). Few days ago I noticed that the ASR warning light came on (only the warning, not the Hazard triangle light). After lot of reading, I tested a few things.
After starting the engine the ASR is off. After a few minutes of driving ASR light comes on. If I manage to drive without braking (hand brake and luck...), the ASR wont come on.
And when I start using the brake, after a few brakes, the light comes on when "releasing" the brake.
I also tested this, without moving the car. After starting the car, keeping the hand break take the car our of P, and press the brake pedal a few times.
In a few tests, I noticed that the ASR comes on no matter if the gear is in P or D.

I didn''t see any issues with the break light.
Now, .. I am thinking, that since the car is not moving, likely it is not the speed sensor. (Hall effect sensor).

Based no these tests, can we conclude that very likely it is the brake switch ?

How difficult is changing this switch? I have already opened up the plastic trims before (for chaning the bulbs behind cluster). Is the switch easily accessible near the pedal? any tools needed?

Thanks

Kaveh

(in reply to paulie)

Post #: 25

RE: BAS/ASR Light on - 7/5/2008 11:30:10 PM

kaveh.afshari

Posts: 2
Joined: 6/30/2008
Status: offline

problem solved,...
all summarized in:

http://kaveh.afshari.googlepages.com/slk230asrdebugging

(in reply to kaveh.afshari)

Post #: 26

RE: BAS/ASR Light on - 7/25/2008 1:30:55 PM

rooobpl

Posts: 8
Joined: 1/4/2008
Status: offline

Jeff,

ESP/BAS light used to come on now and then fo no reson, but usually when the engine was cold. Mercedes has changed the speed sensor and the problem seems to be gone.

Robert

(in reply to coolhuh)

Post #: 27

RE: BAS/ASR Light on - 7/25/2008 10:44:49 PM

snanceki

Posts: 2179
Joined: 12/11/2004
Status: offline

Robert,

There are several speed sensors.
Usually the cause is that they get "dirty" with brake rotor and pad debris which sticks to the tip.
Maybe they just needed cleaning but glad the issue has now been resolved.
As I have posted previously the Top Hit for this problem is a failing Brake Light Switch with dirty / damaged / faulty Speed Sensors No. 2 in that order.

Stuart.

(in reply to rooobpl)

Post #: 28

RE: BAS/ASR Light on - 7/29/2008 12:15:13 AM

tonyrobin

Posts: 9
Joined: 5/13/2008
Status: offline

Reading through these replies, I am wondering if the same remedies apply to my 91, 560 SEL which also has an ABS light that sometimes comes on, and the ASR light which is always on, but only after a couple of minutes driving. Even so, the triangle light comes on if I make the car skid, showing that ASR works, all very confusing.

(in reply to snanceki)

Post #: 29

RE: BAS/ASR Light on - 7/29/2008 12:42:14 AM

snanceki

Posts: 2179
Joined: 12/11/2004
Status: offline

Hi,

The ASR (triangle light) works when the ASR malfunction light is illuminated?

The malfunction light comes on ONLY after driving some distance rather than at ignition on + X seconds. Correct?

Mmm?

(in reply to tonyrobin)

Post #: 30