Battery location.
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Joined: Nov 2012
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2005 e500 4matic
Battery location.
bought 2005 e500. No battery under hood. big one in trunk. It had batteries replaced. Both now in trunk? Not starting so want to charge both. Do not see it.
Box where backup battery should be is empty with sticker for it being in trunk but do not see it there. I assume car should start without it. Turns over easily. Charged main battery without disconnecting. I assume backup battery has to be separately charged?
Not a fuel pumps problem? Flywheel position sensor defective?
Box where backup battery should be is empty with sticker for it being in trunk but do not see it there. I assume car should start without it. Turns over easily. Charged main battery without disconnecting. I assume backup battery has to be separately charged?
Not a fuel pumps problem? Flywheel position sensor defective?
Last edited by artbissell; Nov 10, 2012 at 11:45 PM.
Thread Starter
Newbie
Joined: Nov 2012
Posts: 8
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2005 e500 4matic
Little battery was not visible in dark . Where it is supposed to be. Looks new and clean and 12v+. FLAMM. Only for brakes? And should not interfere with starting? Box for air filter; not battery.
Starter runs strongly but no gas or ignition. Main battery fine. Replace both angular position sensors? With 2 fuiel pumps is one enough to allow starting?
Starter runs strongly but no gas or ignition. Main battery fine. Replace both angular position sensors? With 2 fuiel pumps is one enough to allow starting?
Member
Joined: Jan 2012
Posts: 244
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From: PA, USA
2004 E320 4matic Sedan
The auxilliary battery is in the front of the car....
it is next to the windshield washer reservoir filler, and underneath the cabin air-filter box. It provides electrical resiliency, in order that the brakes still work if the main battery fails. There are ample other discussions on the topic of batteries on this W211 part of the MB forum, including how to find and change the batteries. Have you read those threads? Try this one for a start.... https://mbworld.org/forums/e-class-w...-workshop.html
Thread Starter
Newbie
Joined: Nov 2012
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2005 e500 4matic
OZUSA: Fine info and reference. Battery looks new and is about 12.5v. Apparently gets charged o.k. Is o.k. to connect charger to main battery without disconnecting
anything?
I was told to replace crank and cam position sensors with MBZ ones on this 90K miles car for reliability. And might fix starting problem.
anything?
I was told to replace crank and cam position sensors with MBZ ones on this 90K miles car for reliability. And might fix starting problem.
Thread Starter
Newbie
Joined: Nov 2012
Posts: 8
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2005 e500 4matic
All ok with batteries, and now starting after checking fuel pumps relay in trunk fuse box. New $15. and back to instant starting and running. I expect with 2 fuel pumps if one quit other would keep car running; and are generally long lasting?
