Open Trunk Door Without Battery

[nsjames]

open the front door and fold the rear seats down. Access will be much easier.

You can then pop the rear access panel and jerk it right out of the hinges from the front. Remove it and you'll have plenty of access.

[scot850]

That is not what I have done in the past and had no issues. Spoke to the service foreman about this and he said that is only necessary if they are doing a reset.

+ve cable first and then -ve.

Neil.

[nsjames]

Why put key in position II ?

Not sure but those are the Volvo instructions if you ever disconnect the battery.
Others who have not done this on the P2 models had electrical glitches until they re-did that part of hooking back up a battery.

position II is an SRS safety thing.

If the SRS system malfunctions and pops bags they want it to happen while you're in the back hooking up the battery, rather than sitting in the drivers seat turning the car for the first time.

[kranz]

That makes good sense. Would it make sense for the P80s as well?

[kranz]

Actually it occurs to me that the SRS triggers for the P80 are mechanical rather than electrical.

[Angelsfly]

Look under where you reach to unlatch the trunk. On one side of the long button you push to unlatch the trunk you will see a roundish rubber thing. Take that rubber thing off and the keyhole is under it. I hope this helps.

[beigg]

Could also pull the fuse for the circuit out from the fuse block and feed it power direct using it's own circuit.

[cn90]

So, I learned something new...after parking the car at the airport for 2 weeks with the
ground cable disconnected, I could NOT open the trunk using the basic key...

BTW, I have a spare battery sitting on the garage floor and I can tell you that the battery
still has 12.5V after 2-4 weeks sitting there unattached to any device. I cannot say the
same with a battery in a car (attached) bc of parasitic drain.

I usually d/c the ground cable at the airport, simply bc I don't want to deal with dead battery
on my return from the trip.

Of course the options are:

1. With a donor battery, jump the underhood terminals so you can get 12V.

2. Use a coat hanger with a hook to pull the emergency release (from the rear seat area).
I think the law says any vehicle made after 2001 or so must have emergency trunk release.

3. Use the full-service key.

This idea is funny bc even the basic key can open the trunk as long as battery is good. If the
shop mechanic wants to access the trunk using the basic key, turn the key in igntion to position I.
Hit the "lock-unlock" button x 2 on the master switch area.
Walk to the back of the car and squeeze the rubber pad to open the trunk (assuming the wire loom
that feeds the trunk latch is not damaged)!
So this idea (different keys) is only true for the glove box contents.

If you look at the photo, you can see that the difference is at the tips of the keys...
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Keys.jpg (111.9 KiB) Viewed 817 times

[abscate]

It’s a Volvo safety thing that minimizes the chance of an electrical surge firing the air bag on installation. It used to be in the shop repair manuals as the procedure