Question about BMW X3 Series
There has been no hint of any electrical problems, car has been running great. The battery was replaced 2.5 years ago.
Yes it can the battery should be disconnected when the car is stored. Items like the clock ecu trickle power from the battery
Posted on Nov 08, 2014
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Posted on Jan 02, 2017
replacing the complete lock set with the EWS control unit can be expensive as the control unit will also need to be programed and/or encoded, however if the lost keys cannot be found and you are sure they cannot be used to steel you car you can just order replacement keys from your local bmw dealer. hope this is of some help. You will also nead to disable the lost keys if you order replacements rather than a complete set.
Posted on Jan 19, 2009
SOURCE: Battery going dead 2001 BMW 330i
Whenever a car has this type of a problem, it is normally because of poor connections, belt slippage *severe*, or - very possibly, something is putting an excessive drain on the battery when it is not running.
My experiences have been to first check that ALL the connections are totally clean - especially check your battery posts and make sure they are tight with very good - surface-to-surface contact. Remove BOTH connectors on the posts and clean with battery post cleaning tool *wire brush* and then use the spray that stops / limits corrosion.
Are you sure that battery IS OK? Take it in for a load test - old batteries often deteriorate over time *sealed or not* and it just might be time for a new one. Get the biggest 1 that will fit in where it is held. More amperage *rating* is always better.
Poor connections often happen during cold weather season *expansion and contraction cause this*.
BAck to connections again - VISUALLY inspect ALL your cables/wires for discoloration. Connections need to be tight - end-to-end in the charging system. I am not sure if the car has a starting relay or not - and if so - where it IS located. THAT TOO is a problematic area due to poor connections that quite often, just may need to be cleaned.
Are you sure your alternator IS good --- are it's belt nice and tight- but not too tight? Speaking of the belt ... look on the inside track of the belt - has it been replaced recently or is the rubber in poor shape *splits, showing sign of extreme heat from slipping etc*. When you have a load test - that test alone will indicate whether it IS charging even if everything is running like A/C, radio, light, wipers. Check you gauge inside the car - IF it has one - and no matter what RPM ~ it should still be charging *showing positive charging - NOT discharging*. Lastly - the alternator OUTPUT -- is it the right one for that car - correct rating???
There are even more areas worthwhile checking ... but unless you have the correct tools and diagnostic equipment - it can be tough to nail-down the right specific problem. A lot of places *like Sears* will have that - and used to not charge for the diagnostic - because they wanted to sell you THEIR battery.
One more thing .... most cars will have some minor drain due to clocks running, alarm working and so on. HOWEVER - if a light *like an interior or truck light* remains on, that will give you a larger drain.
A battery should never go dead while driving - and your light *running lights* should always be bright .. are yours??????
Hope this helps!
Posted on Mar 31, 2009
Ditto here on a 2005 jeep. We bought it new and found the battery dead on a few mornings the first year. Nothing left on. Did the new alternator thing about 2 yrs. ago and a few batteries along the way. This is what we noticed..... If you leave a CD in the CD player, that is the prime little devil that sucks out the juice. Now, we never turn off the car while a CD is in the dash. Now, maybe not necessary every time, but always overnight and now by habit, all the time, we make sure there is no CD inserted when the car is off. Hope this helps.
Posted on Dec 03, 2009
When inside your car is it a the IBS (intelligent batery sensor) what this is the all recharging controlls. Battery must a registrated to car memory when new is where after change to empty battery! In diagnostical tools only! Car remember so how a old empty battery and recharging no good!
WARNING: Use you AGM specially batterie with fibre glass for your BMW attached only!
Posted on Jun 28, 2010
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