Do you have to reset computer after installing a battery

Tunebyear
20

Asked by Tunebyear Nov 12, 2012 at 06:53 AM about the 2004 BMW X5 4.8is

Question type: Maintenance & Repair

We found at odd times the alternator shuts off  leaving only the battery to drive the engine which soon shows
warning lights and then a total shut down and a dead engine, yet the Ign warning light never gave advance warning.
After say half an hour you could jump start the engine after which every thing is in order and the alternator  charging
up the battery

4 Answers

jwhalen70
420

Undo your negative battery terminal and turn on ignition key leave on for a couple of minutes, turn off key and install negative terminal. It sounds to me that your altenator needs to be replaced, it is working until it gets hot, the altenator is faulty, would not have anything to do with computer, however if u are going to chang it yourself make sure u disconnect negative terminal from battery to prevent shorting the altenator wires against something that would be grounded.

3 out of 3 people think this is helpful.
Tunebyear
20

Hi there Jwhalen, a nice tip about the ignition key, It's when a problem comes along there are so many interesting things that pop up Probably the best way to learn just how things tick Yes I'm thinking it's the alternator and happy to hear about the computer side of it, hopefully I will get my hands on the X machine next week and have some fun. O' yes I sure will disconnect the battery before work. Many thanks

2 out of 2 people think this is helpful.
PrasannaPMC
30

Hi guys, I ran to flat battery and RACV guy who came to fix it disconnected the + terminal and reconnected it. now computer is asking for a code before it starts, I have no idea what is the code. does anybody knows how to reset this code please? Is it OK to charge the battery with external Charger through the jumper points while the battery is fixed in the car?

3 out of 3 people think this is helpful.
tenspeed
49,815

I don't know anything about the code. You can charge the battery in the car. Start a new thread so people can respond. The thread you are on is four months old.

2 out of 2 people think this is helpful.

Your Answer

Related Questions

X5
Looking for a Used X5 in your area?
CarGurus has 7,954 nationwide X5 listings starting at $3,995.
ZIP:

Search BMW X5 Questions

BMW X5 Experts

#1 Tom Demyan
Tom Demyan
Reputation 450
#2 Robert Charlson
Robert Charlson
Reputation 290
#3 Luke Merry
Luke Merry
Reputation 240
View All

Related Models For Sale

Used BMW X3"
160 Great Deals out of 6,838 listings starting at $5,995
Used BMW 5 Series"
569 Great Deals out of 18,347 listings starting at $1,500
Used Mercedes-Benz M-Class"
285 Great Deals out of 7,735 listings starting at $1,795
Used BMW 3 Series"
1,075 Great Deals out of 35,196 listings starting at $1,800
Used Acura MDX"
217 Great Deals out of 9,825 listings starting at $2,895
Used Porsche Cayenne"
64 Great Deals out of 3,240 listings starting at $6,980
Used Jeep Grand Cherokee"
755 Great Deals out of 53,842 listings starting at $987
Used Land Rover Range Rover"
96 Great Deals out of 2,306 listings starting at $2,500
Used BMW 7 Series"
153 Great Deals out of 5,705 listings starting at $2,895

Used Cars For Sale

2014 BMW X5 For Sale
1,669 listings starting at $53,984
2013 BMW X5 For Sale
27 Great Deals out of 680 listings starting at $32,443
2012 BMW X5 For Sale
64 Great Deals out of 909 listings starting at $26,990
2011 BMW X5 For Sale
51 Great Deals out of 992 listings starting at $25,946
2010 BMW X5 For Sale
14 Great Deals out of 223 listings starting at $20,900