E class brake pad wear light

[DamienCBR]

I have a 2016 S212, the 'check brake pad wear' light came on yesterday down the M1. I am going to have a look over the weekend (used the wife's car today). I know it comes down to driving style but how long should they be OK for, I will book it in but might not be for a week or two. it is on 38k, the front discs seem to a lip on them so I assume it is front pads and discs on the basis the computer doesn't tell me. Both my BMW and Audi in the past said which axle and how many miles left.
Thanks
D

[Dunit]

You should be fine as the contacts are slightly away from the disc surface which are going to be replaced anyway,Just get them done in the next month.
Fronts are easy replaced .

[donkmeister]

Annoyingly the pad wear sensors are only at the 50% wear point, and placed such that any disc lippage cuts the wire (and registers wear) sooner than 50%. Solutions: brake lathe to remove lip when doing pads, fit discs every time pads are changed, snip sensor and solder wires together.
Bad design, but well-meaning.

[yellowbentines]

50%? On my S212 Im on 44k miles on original discs and pads all round. The pads are thin and the warning is going to come on any day (if not Ill replace soon anyway as Ive got some long trips coming up), definitely way past 50% and no action from the wear sensors.

[donkmeister]

yellowbentines said:

50%? On my S212 Im on 44k miles on original discs and pads all round. The pads are thin and the warning is going to come on any day (if not Ill replace soon anyway as Ive got some long trips coming up), definitely way past 50% and no action from the wear sensors.

Perhaps they improved the design for 212, but here is a picture of a 211 brake pad from the side. I think it might be disingenuous for me to say it is 50% wear (that is how I've seen it described elsewhere) but it is certainly 50% of the distance between the face of a new pad and the friction material/backing plate interface. Obviously you wouldn't run your pads to the bare metal