Wheel speed sensor

[shane@mbtech]

Yes indeed. However, I was under the misapprehension that if it failed, it would trigger the dash lights and therefore an error log that would need resetting in the same way.

No. Drive off and they are picked up. Then light usually goes out.

[Steve B]

so if precautionary I need 3 :banghead:

Yes..., about £100 aftermarket for 3 sensors

[shimmy]

On my car (again it wasn't a failed sensor), but when the light triggered, the only thing that it did was disable the traction control and ABS. Surely if the sensor failure does the same thing, it wouldn't be a problem for a driver of you calibre ?

you are so right......I was thinking of Yanto

[Mike R]

so if precautionary I need 3 :banghead:

On my car (again it wasn't a failed sensor), but when the light triggered, the only thing that it did was disable the traction control and ABS. Surely if the sensor failure does the same thing, it wouldn't be a problem for a driver of you calibre ?

[shimmy]

Fronts are sided, rears are the same both sides (but different to front)

so if precautionary I need 3 :banghead:

[Steve B]

i guess better to have one (are they the same front and back)

Fronts are sided, rears are the same both sides (but different to front)

[Mike R]

Yes indeed. However, I was under the misapprehension that if it failed, it would trigger the dash lights and therefore an error log that would need resetting in the same way.

[shane@mbtech]

When my light came on on mine (after the power dropped below a specific voltage), it needed reassigning even though it wasn't changed. It just refused to recognise it until this was done.

So yours was nothing to do with wheel speed sensor failing and needing replacing?

It was due to battery voltage dropping and needed fault codes erasing, and nothing to do with assigning a specific sensor?

[shimmy]

Wheel speed sensors are not assigned. They are just plug and play

When my light came on on mine (after the power dropped below a specific voltage), it needed reassigning even though it wasn't changed. It just refused to recognise it until this was done.

i guess better to have one (are they the same front and back)

[Mike R]

When my light came on on mine (after the power dropped below a specific voltage), it needed reassigning even though it wasn't changed. It just refused to recognise it until this was done.

[shane@mbtech]

It needs a software reset, as the new sensor needs to be asigned to the ECU.

Wheel speed sensors are not assigned. They are just plug and play

[shane@mbtech]

It needs a software reset, as the new sensor needs to be asigned to the ECU.

driving off will reset it:supz:

[Mike R]

It needs a software reset, as the new sensor needs to be asigned to the ECU.

[shimmy]

Easy mate.

Front. Wheel off. Undo sensor. Wiggle out. Follow wire up to connector plug behind plastic cover. Undo., refit in reverse order.

Rear. Wheel off. Undo sensor, wiggle out. You need to drop the plastic cover under car near jacking point to access plug. Undo. Refit,

Making sure you refit wire in clips afterwards.

Is it best to carry two or are they the same part?

Do faults have to be cleared for it to work properly?

[shane@mbtech]

How easy to fit if you are at a trAckday?

Easy mate.

Front. Wheel off. Undo sensor. Wiggle out. Follow wire up to connector plug behind plastic cover. Undo., refit in reverse order.

Rear. Wheel off. Undo sensor, wiggle out. You need to drop the plastic cover under car near jacking point to access plug. Undo. Refit,

Making sure you refit wire in clips afterwards.