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

5 Answers

jwhalen70
600

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.

4 out of 4 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
110

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?

8 out of 8 people think this is helpful.
tenspeed
65,675

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.

3 out of 3 people think this is helpful.
tonton1224
0

I need help x5 factory radio replaced battery asking for code, was told to turn key in 1 position but what else help lights everything is working won't start keeps asking for code

Your Answer

Add photo

Related Questions

X5
Looking for a Used X5 in your area?
CarGurus has 11,032 nationwide X5 listings starting at $2,400.
ZIP:

Search BMW X5 Questions

BMW X5 Experts

#1 Tom Demyan
Tom Demyan
Reputation 590
#2 Robert Charlson
Robert Charlson
Reputation 390
#3 Luke Merry
Luke Merry
Reputation 270
View All

Related Models For Sale

Used BMW X3"
229 Great Deals out of 5,703 listings starting at $4,880
Used BMW 5 Series"
667 Great Deals out of 17,543 listings starting at $2,850
Used Mercedes-Benz M-Class"
297 Great Deals out of 11,953 listings starting at $1,500
Used BMW 3 Series"
1,277 Great Deals out of 35,474 listings starting at $1,495
Used Porsche Cayenne"
130 Great Deals out of 2,838 listings starting at $8,499
Used Acura MDX"
330 Great Deals out of 14,513 listings starting at $1,500
Used BMW 7 Series"
132 Great Deals out of 5,114 listings starting at $2,900
Used Jeep Grand Cherokee"
1,230 Great Deals out of 55,004 listings starting at $1,999
Used Land Rover Range Rover"
151 Great Deals out of 3,101 listings starting at $3,000

Used Cars For Sale

2015 BMW X5 For Sale
5 Great Deals out of 4,700 listings starting at $50,975
2014 BMW X5 For Sale
14 Great Deals out of 235 listings starting at $45,995
2013 BMW X5 For Sale
79 Great Deals out of 962 listings starting at $29,449
2012 BMW X5 For Sale
128 Great Deals out of 1,565 listings starting at $22,790
2011 BMW X5 For Sale
28 Great Deals out of 495 listings starting at $20,990