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BMW 5-Series Maintenance and Repair

2171 messages,  Last post on Sep 03, 2008 at 10:00 AM

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What is this discussion about? BMW 5 Series, Electrical, Engine, Sedan, Wagon


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#2126 of 2171
Re: 2005 525i Battery replacement [cindysuecj] by roadburner
May 06, 2008 (9:39 pm)
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Replying to: cindysuecj (May 06, 2008 7:03 pm)

If it's completely dead you should probably go ahead and get a new battery. I've had good luck with Interstate batteries. The MTP-H7 is the one you want. And yes, if you don't drive the car very much I'd invest in a good battery tender, such as the one BMW sells.
#2127 of 2171
wipers will not turn off!!! by cindysuecj
May 07, 2008 (6:36 pm)
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I charged the battery on 2005 525i after it was completely dead. Now it will start, but the wipers are on and will not turn off! HELP! I thought maybe it had to do with resetting something? went to the computer to look, and message came up saying:
 
pass. restraint malfunction
cruise control malfunction
wind shield wiper malfunction
 
Any ideas? Would installing a brand new battery help or is this different? It all started when the battery died.
#2128 of 2171
Re: 2005 525i Battery replacement [roadburner] by Mr_Shiftright HOST
May 08, 2008 (8:31 am)
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Replying to: roadburner (May 06, 2008 9:39 pm)

Burner is right, probably a new battery is in order. And NEVER jump start a totally completely dead battery in any event, no matter what you choose to do. You could lose the top of your head, which you will probably need. Charge up the old one *slowly*.
#2130 of 2171
had it happen by davis101
May 08, 2008 (8:42 am)
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you must check the alternator--replaced my battery before i checked it and could have saved some money. oh well new battery is good for 7 yeaars.
#2131 of 2171
Re: had it happen [davis101] by Mr_Shiftright HOST
May 08, 2008 (8:48 am)
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Replying to: davis101 (May 08, 2008 8:42 am)

Oh I think burner and I (if I may speak for him) were talking about how if a battery discharges completely and totally, it is usually injured by that process and thus its normal lifespan no longer applies.
#2132 of 2171
Re: had it happen [Mr_Shiftright] by roadburner
May 08, 2008 (9:17 am)
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Replying to: Mr_Shiftright (May 08, 2008 8:48 am)

I've also found that bad batteries can cause all sorts of mischief in the newer gadget-laden Bimmers. Inoperative switches, phantom fault indications- you name it.
#2133 of 2171
Re: had it happen [roadburner] by Mr_Shiftright HOST
May 08, 2008 (10:40 am)
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Replying to: roadburner (May 08, 2008 9:17 am)

computers freak out if voltage drops below a minimum, no doubt about it. And modern cars have something like 75 microprocessors in them.
#2134 of 2171
Power loss at 4000 RPM by redflea
May 19, 2008 (2:08 pm)
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I have my 1995 530i (small block 3.0 liter V8) in at a local indie shop. They have a factory trained BMW mechanic who is having problems solving a problem...I get sudden power loss at about 4000 RPM.
 
If I get up to that RPM, the power loss is complete until the revs fall, and the check engine light comes on.
 
Any thoughts as to what to look for, things to check/try? My mechanic is stuck and scratching his head...the short block was replaced under warranty in 1999, so it isn't related to the old problem with sulfur and the original alusil engine blocks in the mid-90s V8s.
 
Thanks!
#2135 of 2171
Re: Power loss at 4000 RPM [redflea] by davis101
May 19, 2008 (2:39 pm)
Reply

Replying to: redflea (May 19, 2008 2:08 pm)

Try the fuel pump regulator filter. It took 4 different shops to recognize this problem. Strange filter setup on bimmers.
David

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