Replaced rear bags...still dropping overnight
can you tell me the part number for WDDHF7CB5AA105416
Thank you in advance.
can you tell me the part number for WDDHF7CB5AA105416
Thank you in advance.
I'm guessing it's ok but what do you guys think? I'm not worried about it being low in the a.m. but while I'm driving it would suck if it slammed out.
The Best of Mercedes & AMG
Last edited by scrowley; Jul 8, 2017 at 09:31 AM.
-I jacked the rear off the ground.
- Left the front on the ground with wheel chalks. --- -Disconnected the battery.
-loosened the lower air lines on unit and let the air run out for about 10 min.
-Then removed all the lines.
-Removed the fittings and ferrals from lines.
-Installed new unit using old bracket to body since studs and nuts where a little rusty
-pushed in all new lines. Pull to make sure they are all seated. I had one line that would not seat. So I removed the fitting and ferral from unit. Slid fitting and ferral on unit then screwed it in.
-hooked up battery
-started car
-let it runs for 5 min. Then shut off.
still said vehicle rising please wait.
started it again and it filled up the rest of the way.
It didn't make it's usual blow off noise when I **** it off or while sitting . Hoping this was my issue of lowering all way in rear overnight.
^^^^the front of the car stays where it should
.
Same as before. The rear pass sags all the way down though and the rear driver is still up 1.5" or so. I noticed pass sagged faster before also.
I sprayed all the fittings on the valve block. No bubbles. I did that right off the bat. Just to be sure
So I'm back at square one.
I'm going to start car to tonight, let it fill all the way up. Then disconnect the battery and see where it's at in the morning.
I can hear that valve making noise still hours after it being shut off and locked. Not air but electronic noises.
Seems like some is telling the car to lower when it's in sleep mode.
I've tried parking on different inclines overnight. Makes no difference.
if I drove the car then shut it off and lock it, when I unlock it that valve makes noise and blows off air. Not every time but often
just throwing random info out there
Last edited by scrowley; Jul 12, 2017 at 08:09 PM.
just started it up and noticed pass side front and rear are noticeably lower. Measured 3/4" difference pass. To driver side. on sport and comfort settings.
They have always measured the same.
I am a home builder by trade and wrencher on my spare time. Ha. This is though my first mercedes. Like learning all over again. I had an X5 that had airbag issues. Was much easier to diagnose. I feel like I'm going crazy with this issue.
Last edited by scrowley; Jul 12, 2017 at 10:37 PM.
It stills slams in the rear. Always pass side lower than the driver. It is also lower in the front pass but not slammed.
Seems all over the place. Although symptoms are consistant.
So after replacing the valve block the only difference is it slams lower on the passenger side.
Is it possible to have a bad height sensor without throwing a code?
Thanks in advance









