Bad battery causes my trunk not to open
Thread Starter
Super Member
Joined: Jun 2006
Posts: 556
Likes: 4
2011 C300 4matic, 2015 Porsche Macan S, 2006 R500 (sold)
Bad battery causes my trunk not to open
My automatic trunk stopped working this past Saturday. When I pressed the buttons, it will unlatched but will not go up nor down. I tried to open it manually but it will not stay up.
I did a lot of research and the first result was failed hydraulic pump. Then a guy on ML forum casually mention battery can cause the hydraulic pump to not have enough power to open the trunk.
The old battery was the original. I can tell it was on the last leg with some hesitation to ignite the car. But I had never seen any battery warning message on the dash. Long story short, Indy replaced the battery and the trunk starts working again immediately.
If you have trunk problem similar to mine, may be you should try to find a way to juice up the battery and try to open the trunk again. It may work.
I did a lot of research and the first result was failed hydraulic pump. Then a guy on ML forum casually mention battery can cause the hydraulic pump to not have enough power to open the trunk.
The old battery was the original. I can tell it was on the last leg with some hesitation to ignite the car. But I had never seen any battery warning message on the dash. Long story short, Indy replaced the battery and the trunk starts working again immediately.
If you have trunk problem similar to mine, may be you should try to find a way to juice up the battery and try to open the trunk again. It may work.
Last edited by supernsx; Oct 3, 2013 at 01:52 PM.
Thread Starter
Super Member
Joined: Jun 2006
Posts: 556
Likes: 4
2011 C300 4matic, 2015 Porsche Macan S, 2006 R500 (sold)
Newbie
Joined: Oct 2013
Posts: 7
Likes: 0
From: Georgia
2006 MB R500
So my 2006 R500 trunk won't release. I can do it manually from the inside (total PITA) and then it will raise and lower just fine. Is it a battery issue or a hydraulic issue? another thread suggested it is a $650 fix. Not sure I want to sink that into this one with 115K on it.
