defalt

Hi
I tried to replace my front brake pads on my 2006 E/CLS 320 CDI with a friend's help. He (quote is important) "knows what he is doing"; he made me unbolt not the bolts that hold the caliper to the car, but the bolts that hold the caliper to the other part of the caliper.
In the end I got a torrent of brake fluid, I put the bolts back in the holes and the trust I had for him back in my pocket. It stopped leaking. It doesn't seem like I tore anything apart, which is a good thing. Moreover, the car has SBC. Which he forgot (and I didn't knew) to deactivate. And he made me do the work so "I'll know how to do it next time".
Anyways, everything is put back in place, I still got my fingers so we're good, and I watched the first Youtube video I saw which explained how to do it, correctly this time.
I have one question: is it safe to bring the car to an auto shop to do the brake fluid change not doing more than 20kmh and braking with the parking brake (my house is a bit uphill with a roundabout right down)? (it has lost quite a bit of fluid and I am afraid air may have got in).
TL,DR: Can I brake down a small hill with the parking brake, will the engine brake be enough, can I get the transmission to stay in 1st or 2nd gear to keep the speed down?

tjts1

It's a gamble. Your bring brake circuit is full of air now. You can bleed the brakes easily yourself and an assistant just like any other car if you deactivate the SBC by pulling the SBC electrical plug under the hood. Just have them pump the brakes pedal while you open/close the bleed screw. Or have it towed to the shop.

defalt

There is just approx 50 or 100 mL of fluid that leaked, and I put it back right away. I don't think there is too much air compared to how much brake fluid is it. I will test the brakes when I have the new pads on, and I'll pray for my brakes not to let my car fall downhill. I've always got the parking brake in case it gets really wild I guess. Thanks for your answer Where is the SBC plug located?

tjts1

bbirdwell

Go to this link and download the 68-page technical document for SBC:

http://www.cardiagnostics.be/-now/DA...n/W211-SBC.pdf

-Page 29 describes what happens when you unplug or deactivate the SBC so...yes, you can bleed the front brake caliper that has air in it. Unplugging the SBC will throw a "current" code while unplugged and a "stored" code after plugging back into the harness.
-Page 39 tells you what will activate the system while you have it apart. You do not want to activate the system until ready to put back into service. Until then, deactivate with STAR or unplug the SBC module.
-Page 42 explains why you would prefer to use STAR to deactivate.
-Page 43 explains when SBC must be deactivated for work to be performed.
-Page 45 explains why you would prefer to reactivate SBC with STAR.

There are 68 pages of goodness in this technical information.

Overheated

You're my new best friend.