high battery drain
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Joined: Apr 2008
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From: Irvine, So.Cal
Chennai, India
My Ride: 2005 545i
The first control unit they changed was the one for the 'power-management' (according to my SA) and when they re-programmed it, it is asking them to replace the TCU 
BMW NA has authorized the change so i'm getting a new TCU
. Is there anything i should watch out for when i pick up the car with the new TCU ?
BMW NA has authorized the change so i'm getting a new TCU
. Is there anything i should watch out for when i pick up the car with the new TCU ?
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Joined: Apr 2007
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From: Vancouver, BC , Canada
My Ride: 2011, X6 Hybrid . Alpine White , every option. 20" Conti' NON runflats,OEM trunk spoiler , LUX V3 AE's , HP Thunder Fogs , custom front bumper reflector delete........
Originally Posted by navin' post='596357' date='Jun 5 2008, 02:23 PM
So this sits in the car and feeds the battery juice whenever the car is asleep or is it always running irrespective of if the car is asleep or not?
And how difficult is it to install ? i might just get it just in case, sounds like a good thing to have although i would never have gotten to know about the faulty control module
And how difficult is it to install ? i might just get it just in case, sounds like a good thing to have although i would never have gotten to know about the faulty control module
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From: Western Washington
My Ride: 2008 Space Gray 550i, Light Poplar Wood, Anthracite Head Liner, Sport Package, Sport Automatic Transmission, Cold Weather Package, Front Ventilated Comfort Seats in Black Nasca Leather, NAV, HUD, Active Steering, Comfort Access, Night Vision, Lane Deviation Warning, Active Cruise Control, Heated Rear Seats, Folding Rear Seats, Power Shade w/ Rear Side-Shades, Rear Air Bags, Logic 7, HD Radio, Sirius Satellite Radio, iPod/USB Adapter. Car in BMW Body Shop, estimated completion 01/24/07.
Isn't the BMW charger the same as the Battery Tender brand? That's what I use when not driving the car a week or mo (hardly ever happens! 
)
Cal
)Cal
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From: Vancouver, BC , Canada
My Ride: 2011, X6 Hybrid . Alpine White , every option. 20" Conti' NON runflats,OEM trunk spoiler , LUX V3 AE's , HP Thunder Fogs , custom front bumper reflector delete........
Originally Posted by calpalmer' post='597394' date='Jun 6 2008, 07:40 PM
Isn't the BMW charger the same as the Battery Tender brand? That's what I use when not driving the car a week or mo (hardly ever happens! )
Cal
)Cal
I'm not sure who makes the BMW charger but any good trickle charger will work .................
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From: Milwaukee, WI
My Ride: 2007 Mercedes CLS63 AMG
Designo Graphite with white leather interior
Keyless Go, Heated/Ventilated seats, Parktronic
Originally Posted by westcoast550' post='597472' date='Jun 6 2008, 09:49 PM
I'm not sure who makes the BMW charger but any good trickle charger will work .................
+1. Just make sure it's a trickle charger (ie the one that shuts off when it's fully charged). these are readily available at any auto parts store. No need to pay $50-$60 at the BMW dealer. I have one that was $20-$25.
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From: Milwaukee, WI
My Ride: 2007 Mercedes CLS63 AMG
Designo Graphite with white leather interior
Keyless Go, Heated/Ventilated seats, Parktronic
Originally Posted by westcoast550' post='595749' date='Jun 4 2008, 06:05 PM
even parking them for 5 or 6 days can result in a "slow" start.
I only drive my 5er once every 2-3 weeks during the nicer months (May - Oct) and I've never had a problem like this (knock on wood).
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