my trunk wont open with battery in it

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

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

240

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.

11,745

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

Add photo

Related Questions

A8

Looking for a Used A8 in your area?

CarGurus has 2,015 nationwide A8 listings starting at $3,899.

ZIP:

Search Audi A8 Questions

Audi A8 Experts

#1 Tom Demyan
Tom Demyan
Reputation 130
#2 tenspeed
tenspeed
Reputation 90
#3 Alexander Sryeznikov
Alexander Sryeznikov
Reputation 70
View All

Related Models For Sale

Used BMW 7 Series
184 Great Deals out of 6,076 listings starting at $2,999
Used Audi A6
140 Great Deals out of 6,533 listings starting at $999
Used Mercedes-Benz S-Class
145 Great Deals out of 6,614 listings starting at $1,200
Used BMW 5 Series
506 Great Deals out of 15,610 listings starting at $2,499
Used Mercedes-Benz E-Class
375 Great Deals out of 21,643 listings starting at $699
Used Audi A4
173 Great Deals out of 10,781 listings starting at $700
Used Jaguar XJ-Series
59 Great Deals out of 2,692 listings starting at $1,995

Used Cars For Sale

2017 Audi A8 For Sale
860 listings starting at $67,000
2016 Audi A8 For Sale
3 Great Deals out of 102 listings starting at $48,999
2015 Audi A8 For Sale
103 listings starting at $38,895
2014 Audi A8 For Sale
4 Great Deals out of 202 listings starting at $27,995
2013 Audi A8 For Sale
3 Great Deals out of 144 listings starting at $25,988