Bas esp light on

[Andy23666]

Hi all ive read through posts about this warning light and ive changed brake switch and the lights were off for a few miles then came on again. Any other suggestions ive run a diagnostics test and nothing shows.many thanks

 

[dvarley]

Have you tried resetting by turning the steering from side to side a few times. This is normally done after disconnecting the battery to reset these lights. Maybe you have a dodgy fuse

 

[Andy23666]

Ive booked in for a wheel allignment tomorrow as ive tried all possible remedies except thè fuse.is it the interior fuse box or under bonnet ? Many thanks

 

[dvarley]

On mine which is a w210 E320 cdi it was in the side of the dash accessible with the door open. It happened to me when I plugged a trailer in and shorted the brake lights. All the BAS and ESP lights came up. I replaced the fuse and did the steering turning and the lights went out.

 

[onefortheroad]

Is your battery OK?

 

[Andy23666]

Seems ok but maybeits time for a new one oys about 6 yrs old only had it off early last yr as left sidelights on. will order a new one many thanks

 

[MBDevotee]

Or just put on charge for 24 hrs

 

[John Laidlaw]

Can also be caused by a faulty steering angle or wheel speed sensor. Brake switch (or worn brake pads) could be the obvious fix, but best get the codes read on an MB specific diagnostic and it will save guesswork.....

 

[Andy23666]

Thats the brake switch,sensor and wheel alignment all done and still got the warning light lol.tried holding down esp interior switchand the right to left wheel turning.i read about changing the fuses but on the diagram it says fuses 16 and 17.ive had the fuse box open and on the paperwork it says theyre spare ?? And cant find abs bas esp fuses anywhere.

 

[mioba]

What code reader did you use.

 

[Andy23666]

What code reader did you use.

Rac came out and done the diagnostic said itcwas sensors but done them

 

[mioba]

Ive booked in for a wheel allignment tomorrow as ive tried all possible remedies except thè fuse.is it the interior fuse box or under bonnet ? Many thanks

you need to look at the fuse chart and find the fuse for the circuit to determine the fuse and then location.

 

[mioba]

you need a merc specific code reader. were parts genuine merc. Mercs are sensitive to non genuine merc parts.

 

[alexanderfoti]

Rac came out and done the diagnostic said itcwas sensors but done them

If there was a code in the BAS/ABS/ESP module, that said wheel speeds sensor fault, and its not them, then its the reluctor rings on the driveshafts, but unlikely to be all 4.,.......

 

[mattkh]

..........ive changed brake switch and the lights were off for a few miles then came on again.

So changing the brake switch did have an effect. Do you mind taking the switch out and fitting it again.
If you go down this path, please put up a picture, especially if there is some sort of a ratchetting system on it.
I guess you just test the brake lights coming ON to prove that the switch is working.
What year is the car.?

 

[Andy23666]

Its a 2003 slk 200 i can tomorrow as its cold wet and dark out now.many thanks could thisbe faulty already as it was put in dec 2020 ?

 

[mattkh]

Is it a 4 wire plug..? Did you push it down completely and heard the click.?

 

[Andy23666]

Is it a 4 wire plug..? Did you push it down completely and heard the click.?

Hi matt not sure a mate got under there as im disabled ill get it looked at again tomorrow tho

 

[mattkh]

No rush, whenever the weather allows and convenient.

 

[Andy23666]

No rush, whenever the weather allows and convenient.

Hi matt not very nice here in blackpool tday theyve threatened snow which is rare here im gonna buy a mb diagnostic.