disc pad change

[euclidb2]

In the not too distant future i will be changing the rear pads on my 53 reg E220 cdi,i have read a lot of very good advice off these forums and used some of it to my benefit,what i would like to know is.....advice is given to dis-connect BOTH batteries,i know of the one in back but is there another on my model/year W211?........many thanks in advance for any help.......paul.....

 

[Cole@MBS]

Under bonnet, N/S under screen, air intake cover held on with a plastic 10 mm nut, remove cover, theres your SBC back up battery!

 

[euclidb2]

Under bonnet, N/S under screen, air intake cover held on with a plastic 10 mm nut, remove cover, theres your SBC back up battery!

Been and done this,would never have found in a zillion year's..many thank's your'e a gent....