Could “excessive front wheel bearing play” cause a front wheel sensor to send a fault code and ABS and ESP not working.

[Submariner1]

Got the dreaded “ABS and ESP not available” on the dash, when connected to iCarsoft MB II says “EBV, ABS and ESP not available
codes 5101, 5102, 5106 L6/1 Left Front sensor - Historic,

I assume Left Front is from inside the cab, i.e, passenger side/ nearside?

what is EBV?

Miffed if its a sensor as these were all replaced 10,000 miles ago. Original ones lasted 44,000

As the service advisory said the front wheel bearing had excessive play 230 miles ago - I wonder could that throw a sensor code? As it wobbled?

 

[onefortheroad]

Might sound daft but is your main battery fully charged?

Ebv is something like electronic brake distribution.

It may well be the sensor is ok but the pick up ring is giving faults ??

 

[DREAMER NO2]

Bearing play in front wheel ,or rear for that mater , can cause abs warning light to come on .

 

[ajlsl600]

Wud hav thought bearing wud have. To be pretty loose. Try lifting wss and cleaning end get torch look down see reluctor ring and check if dirty or rotton. Go from there.
Also look to see if wss is providing any speed data in live view.

 

[Submariner1]

Might sound daft but is your main battery fully charged?

Ebv is something like electronic brake distribution.

It may well be the sensor is ok but the pick up ring is giving faults ??

My battery is OK, ish 12.2V and I had fUlly charged it recently, did it again and was at 12.5V still faulting.
I do hope its not the reluctor ring.

 

[Submariner1]

Bearing play in front wheel ,or rear for that mater , can cause abs warning light to come on .

I do hope so

 

[Submariner1]

Wud hav thought bearing wud have. To be pretty loose. Try lifting wss and cleaning end get torch look down see reluctor ring and check if dirty or rotton. Go from there.
Also look to see if wss is providing any speed data in live view.

I did take it out, some gunk on it. Cleaned it, and poked some lint free rag rolled up and spun the wheel a few times to clean the ring I could just see. It seemed to be a fairly consistent colour, and no breaks I could see.

 

[Submariner1]

Wud hav thought bearing wud have. To be pretty loose. Try lifting wss and cleaning end get torch look down see reluctor ring and check if dirty or rotton. Go from there.
Also look to see if wss is providing any speed data in live view.

Apologies but is wss? Wheeel speed sensor. Ref live view is that the data stuff one can see on the MBII?
I will need to get the wife to drive while I monitor it.
She totally hates doing anything car problem related

 

[ajlsl600]

Yes and you don't have to go far to see data , however I have had data OK and still had faulty wss , when changed fault gone, nice little benz earner if going genuine on pts .

 

[alexanderfoti]

I would have thought it would nearly be falling off to cause the issue....

 

[onefortheroad]

Is this set up similar to that of the w211 ?? Where the sealing ring is also the abs pick up ring .

 

[Submariner1]

Is this set up similar to that of the w211 ?? Where the sealing ring is also the abs pick up ring .

It looks like it on the parts diagram, as there is only one. Or you buy the whole hub-bearing.

 

[onefortheroad]

It looks like it on the parts diagram, as there is only one. Or you buy the whole hub-bearing.

Do you also lose power steering at + 10 mph or is the fault intermittent?

 

[Submariner1]

Yes and you don't have to go far to see data , however I have had data OK and still had faulty wss , when changed fault gone, nice little benz earner if going genuine on pts .

Went for a drive, when stationary MBII oddly said 0.64 k/hr On all sensors.
Driving all the other three sensors showed the road speed but the “suspect” wss on the front left did not even flicker - just showed 0.64k/hr.
So I guess that one is dead or the reluctor ring is shot. I would have thought if the reluctor ring was partially dead, then it might flicker an incorrect reading?
Ouch in 2019 they were £98 now they are £142.80!

 

[Submariner1]

Do you also lose power steering at + 10 mph or is the fault intermittent?

No I do not loose power steering. Except if I put the scanner on and select that Brake section, then no power steering while the code reader is on. As soon as you deselect the Brake section power steering returns.

 

[ajlsl600]

Went for a drive, when stationary MBII oddly said 0.64 k/hr On all sensors.
Driving all the other three sensors showed the road speed but the “suspect” wss on the front left did not even flicker - just showed 0.64k/hr.
So I guess that one is dead or the reluctor ring is shot. I would have thought if the reluctor ring was partially dead, then it might flicker an incorrect reading?
Ouch in 2019 they were £98 now they are £142.80!

That's why I fitted febi sensor. I think modern sensors are dtf. Funny how previous all lasted 20 Yr.

 

[noonboots]

We're suffering from a generation of mechanics that have never seen taper roller bearings and how they are adjusted. My SL had front wheel bearing free play as MOT advisories for sound six years before I owned it. As said above it would need to be hanging off to affect the ABS sensor

 

[onefortheroad]

We're suffering from a generation of mechanics that have never seen taper roller bearings and how they are adjusted. My SL had front wheel bearing free play as MOT advisories for sound six years before I owned it. As said above it would need to be hanging off to affect the ABS sensor

I agree .

 

[Roxie]

Got the dreaded “ABS and ESP not available” on the dash, when connected to iCarsoft MB II says “EBV, ABS and ESP not available
codes 5101, 5102, 5106 L6/1 Left Front sensor - Historic,

I assume Left Front is from inside the cab, i.e, passenger side/ nearside?

what is EBV?

Miffed if its a sensor as these were all replaced 10,000 miles ago. Original ones lasted 44,000

As the service advisory said the front wheel bearing had excessive play 230 miles ago - I wonder could that throw a sensor code? As it wobbled?

Yes

 

[Roxie]

My 203 did it last week I knew it was bearing because the light came on at roundabouts. Because its esp it reacts to minor things like one wheel speed sensor variation from normal.
These sensors are active not like the old moving magnet ones that only drop out if the gap is huge.