Welcome Guest. ( logon | register ) | ||||||
|
|
|
| Topic Tools | Message Format |
Author |
| ||
Enzo.C7 Member Date registered: Feb 2015 Location: Hill Country, Texas Vehicle(s): 2015 G63, 2011 Cayenne Turbo, 2016 C63 Posts: 8 | Two Brake Reservoirs in Late Model (2015) Vehicle? Hey Guys, I've got a dumb question. Working on my G63 and was going to bleed the brake system w/ the Motive Products power bleeder. Open my trunk and there are two reservoirs. The regular brake reservoir cap says "Use only DOT 4 Brake Fluid." The smaller reservoir cap (next to the firewall about 11:30 from the main brake fluid reservoir -- see photo attached) says "Use only DOT 3 brake fluid". So what is this second reservoir and why is it using DOT 3 brake fluid? Is it part of the distronic system? If so why is it using different fluid? Any help would be appreciated. Thanks! (2015 G63 Brake Resevoirs? 10 14 19.jpg) Attachments ---------------- 2015 G63 Brake Resevoirs? 10 14 19.jpg (154KB - 8 downloads) | ||
#241104 | |||
Author |
| ||
ychung Veteran Date registered: Aug 2015 Location: SO CAL Vehicle(s): 2004 G500, 2014 ML350, 2008 S550 Posts: 196 | RE: Two Brake Reservoirs in Late Model (2015) Vehicle? The smaller one is for differential locks. I know that Dot 4 is required for brake fluid but I didn't even bother to check for differential lock and I've been using the same Dot 4 brake fluid as well. | ||
#241105 - in reply to #241104 | |||
Author |
| ||
AlanMcR Expert Date registered: Apr 2006 Location: US, CA, Los Altos Vehicle(s): G300DT E300DT 230SL Posts: 3500 | RE: Two Brake Reservoirs in Late Model (2015) Vehicle? Use DOT4 for both. Both systems should be bled every other year. The locker system is notorious for gumming if not used and bled regularly. | ||
#241158 - in reply to #241104 | |||
Author |
| ||
sdw96 Regular Date registered: Mar 2012 Location: MA, USA Vehicle(s): ‘15 G63, ‘19 BMW X7, 98 M3, 89 Grand Wagoneer Posts: 76 | Re: Two Brake Reservoirs in Late Model (2015) Vehicle? if you lift up the cover on the top of the engine, the one in the middle, over the power steering pump, there is a second reservoir for coolant. It is much smaller like the small dot 3 reservoir. I assume it has something to do with the turbos...but have no idea. Would love to know. | ||
#241239 - in reply to #241104 | |||
Author |
| ||
AlanMcR Expert Date registered: Apr 2006 Location: US, CA, Los Altos Vehicle(s): G300DT E300DT 230SL Posts: 3500 | Re: Two Brake Reservoirs in Late Model (2015) Vehicle? Just to be sure, the PS pump has a black reservoir of PS fluid on top of it. Does this version have Air-Air intercoolers, or Air-Water? If Air-Water, then that is what the extra coolant tank is for. | ||
#241242 - in reply to #241239 | |||
« View previous thread :: View next thread » |
|
|