Does anyone happen to know the thickness of OEM brake pads (MB branded) front and rear for a 2006 E320 CDI? Dealer says rears are "about half an inch"....so much for German precision! My rears are original at 153k miles and are at about 4mm. Just trying to gauge how many miles left (assuming similar driving habits).

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Just replace pads. 4mm is low. They are normally 8-12mm thick. Why skimp on the most important part of the car.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

An indicator light will come on when it is time to replace them.

__________________
Jim

What happens if the warning light does not work? Too late when you hear scraping sound against the rotor. If the OP makes an effort to inspect it, presumably removing the wheel, and concern about the thickness then just replace them. Personally, I do not wait for the light to come on. I change them after 20K to 25K. Pads are cheap if you do it yourself.

Or you can test the warning circuit by shorting the sensor to chassis. The light should come on. I do it when I change the pads.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

Wear indicators trip at about 3mm so I have no concerns about 4mm.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Also note that the wear indicators will only trip once or twice, after that they are just rubbed away and no light appears.

Happened to my W124 - wife told me later she saw the lamp light up twice in a day - as it was yellow and not red, she didnt bother telling me.

a month later she wore the pads into the rotors.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

In the car mentioned by the OP the light will stay on. The sensor is a wire loop that triggers the warning if grounded or worn to the point of an open circuit of the loop. The main problem is that there is only one sensor per axle and if a pad wears faster than others you could ruin a rotor without a warning.

__________________

90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

I agree, just replace them. 4mm is worn pretty well. You want to replace them BEFORE rivets start wearing through the friction face.

__________________
'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
http://badges.fuelly.com/images/sig-us/302601.png
http://i959.photobucket.com/albums/a...0/sideview.png