GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Do you have to open the lid to the brake fluid reserviour when changing brakes?

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Old 12-11-2016, 10:24 AM
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Do you have to open the lid to the brake fluid reserviour when changing brakes?

As title. Is this required? Does fluid need room to rise? Thank you.
Old 12-11-2016, 10:28 AM
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Unless you've refilled it at some point, the fluid will have space to go back up. Removing the lid doesn't change anything either way. If fluid has been added, when you push the pads back it will overflow the bottle.
Old 12-12-2016, 09:20 PM
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Just makes it easier to push pitons in.
If it's full, it will overflow when you push pistons back in.
Old 12-14-2016, 01:48 PM
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Originally Posted by NYCGLK
Just makes it easier to push pitons in.
If it's full, it will overflow when you push pistons back in.
this
Old 12-16-2016, 12:38 PM
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I always do, it makes it easier to push in the pistons as mentioned earlier and it makes you check the fluid level and make sure everything is ok.
Old 12-17-2016, 05:27 PM
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Originally Posted by digitalhomer
I always do, it makes it easier to push in the pistons as mentioned earlier and it makes you check the fluid level and make sure everything is ok.
+1 I do the same. Not sure if it really makes it easier, but I have always done it. I've done dozens of brake jobs over the years.

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