on my 545i I was testing the obd system, with the key not yet in the ignition, the obd monitor is already powered up. as a result of that my battery is constantly draing, does anyone know what is the

440

Asked by Apr 03, 2013 at 04:32 PM about the 2004 BMW 5 Series 545i Sedan RWD

Question type: Maintenance & Repair

what could possible be the problem if an obd instrument, start giving out readings before ignition even turned on, there is no codes. would the problem be in the ignition system.

9 Answers

Do not worry about it. the monitoring electronics are about like an LED light....hardly nothin'...besides, would you have it forget all your diagnostic info or have it write an EPROM with your codes?

there are no codes, because there are no codes. The check engine light will usually come on if there ARE codes in that.

440

That is a trick question Judge Roy, I am happy their is no codes, but is it normal to have power to the obd without the ignition in position 2.

440

The reason why I was doing the test was to try an reset a flat tire , and seat belt code that I had.

is the ignition system failing to ignite? perhaps I've missed a meeting again.

whew. thought I'd got something all gerjobbled up. 545's are impressive. the body panels are steel...thick...hearty!...028 or somethin' on the thickity thick side~

not made on a printing press like mitsubishi's are.

the MINI has a special push button for that (for the tire) bizarre how they play this game with you unless you know the order and which buttons to press or all at once, they are making puzzles to which there is no logical path to follow, have this control with three buttons on it and how many times and which buttons, bout drives this old boy insane----kinda getting used to having NO lock cylinder on the door or trunk, and are entirely dependant on the battery in this transponder/key...like there are NO oil pressure NO temperature NO volts NO amps...we're going on faith here with the MINI, sometimes it's better to not know~

440

you are so right about about not having lock cylinder on the doors, and trunk, I also have a 1990 525I, and a 1992 750il, that depends on the battery for everything, luckly the 2004 545 has a door and cylinder lock. and all instrument that you mention would have been nice to have, but I still love the car

Your Answer

5 Series

Looking for a Used 5 Series in your area?

CarGurus has 16,445 nationwide 5 Series listings starting at $995.

ZIP:

BMW 5 Series Experts

  • #1
    Tom Demyan
    Reputation
    2,240
  • #2
    Michael Branan
    Reputation
    820
  • #3
    Robert Charlson
    Reputation
    700
View All

Related Models For Sale

Used BMW 3 Series
1,117 Great Deals out of 34,036 listings starting at $1,209
Used BMW 7 Series
124 Great Deals out of 5,199 listings starting at $2,995
Used Mercedes-Benz E-Class
532 Great Deals out of 21,622 listings starting at $1,999
Used BMW X5
375 Great Deals out of 16,636 listings starting at $2,800
Used BMW 6 Series
63 Great Deals out of 2,379 listings starting at $5,995
Used BMW M5
6 Great Deals out of 530 listings starting at $8,500
Used Mercedes-Benz C-Class
730 Great Deals out of 25,993 listings starting at $1,995
Used Audi A6
144 Great Deals out of 7,665 listings starting at $900
Used Mercedes-Benz S-Class
113 Great Deals out of 7,469 listings starting at $1,200
Used BMW M3
30 Great Deals out of 1,860 listings starting at $5,495
Used Honda Accord
818 Great Deals out of 88,085 listings starting at $1,444
Used Mercedes-Benz CLS-Class
45 Great Deals out of 2,205 listings starting at $6,000
Used Audi A4
245 Great Deals out of 12,122 listings starting at $1,450

Used Cars For Sale

2018 BMW 5 Series For Sale
25 Great Deals out of 4,603 listings starting at $45,220
2017 BMW 5 Series For Sale
24 Great Deals out of 611 listings starting at $39,981
2016 BMW 5 Series For Sale
17 Great Deals out of 469 listings starting at $21,599
2015 BMW 5 Series For Sale
64 Great Deals out of 2,184 listings starting at $15,000
2014 BMW 5 Series For Sale
133 Great Deals out of 1,843 listings starting at $13,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.