my trunk wont open with battery in it

Asked by Jul 13, 2016 at 04:08 PM about the 1998 Audi A8 quattro AWD

Question type: Maintenance & Repair

1998 audi a8 dead battery in the trunk and dont have a way to jump it no post
under the hood either.

3 Answers

330

Here's a potential solution I found: You could connect a battery or charger to the positive terminal on the alternator, and the negative to the frame of the alternator. I think there is also a positive junction block in that area as well.

14,775

Here's the simple method to open the trunk plug into the power port / cigarette lighter with 9volt battery saver press the trunk button open.

i would get a cigarette lighter plug and attach 3 20 watt 8 ohm resistors inline to the wire from the plug in parallel so you have a 2. 6 oh 60 watt resistor then hook the other end up some jumper cables this will give you a primitive battery charger just enough to work the trunk release without the resistors you risk a short circuit and this will blow a fuse disabling this method from working in some cases this will take anywhere from a few minutes to half an hour to work as all the power might get sucked up by the dead battery or it might work instantly if the battery has been dead for a long time or is just slightly weak it will work instantly for different reasons either the battery will not take a charge and all power is present for use or the battery is only taking half of the power and it only needs a boost you could use 4 resistors in theory should not be a problem in rare circumstances it could blow the fuse based how exact they make the part and if a completly flat battery was able to take a charge but lets say the bottom line is anything bellow 6 volts is not gonna take a charge then you might be able to pull it off with 4 resistors my advice use 3

Your Answer

A8

Looking for a Used A8 in your area?

CarGurus has 1,392 nationwide A8 listings starting at $3,499.

ZIP:

Audi A8 Experts

  • #1
    Tom Demyan
    Reputation
    150
  • #2
    tenspeed
    Reputation
    100
  • #3
    bovan
    Reputation
    70
View All

Related Models For Sale

Used BMW 7 Series
118 Great Deals out of 4,791 listings starting at $3,950
Used Audi A6
136 Great Deals out of 7,658 listings starting at $1,950
Used Mercedes-Benz S-Class
108 Great Deals out of 7,162 listings starting at $2,000
Used Mercedes-Benz E-Class
415 Great Deals out of 20,102 listings starting at $1,500
Used BMW 5 Series
377 Great Deals out of 16,342 listings starting at $1,650
Used Audi A4
199 Great Deals out of 12,586 listings starting at $1,800
Used Jaguar XJ-Series
28 Great Deals out of 1,968 listings starting at $2,995

Used Cars For Sale

2018 Audi A8 For Sale
131 listings starting at $73,928
2017 Audi A8 For Sale
109 listings starting at $45,789
2016 Audi A8 For Sale
74 listings starting at $34,995
2015 Audi A8 For Sale
8 Great Deals out of 278 listings starting at $29,995
2014 Audi A8 For Sale
9 Great Deals out of 132 listings starting at $24,997

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.