Exeo ST boot release mechanism

blankton

Active Member
Jun 24, 2022
7
2
Hi, I have just purchased an Exeo, it was from an auction, so I know no history on it. The boot inner trim was removed and the boot wouldn't undo from the door handle.

The last MOT failed because the boot wouldn't stay shut when driving. It seems that this has been rectified by doing something to the mechanism so that now it is partially disabled. You can manually open it by flicking the white plastic lever on the lock mechanism. The car came with a handy stick in the boot for this purpose:)



I can't work out what they have done. I have read some threads for Audi A4's (which I believe this is heavily based upon) which suggest that there is a steel rod going from an actuator to the white plastic lever, but I cant see this. I also cant find any reference to this in the parts catalogue for the Exeo.

I don't mind buying a new lock mechanism, but I want to understand if something else is missing. Should there be an external actuator, or is it integral on this type of lock mechanism?

I have had a play with my voltmeter and there is permanent 12 v going to the lock mechanism and when I pull the door handle there is a momentary voltage down a switch wire, so it appears that the fault is with the lock assembly.
 

GREEBO222

Active Member
Dec 1, 2019
11
3
Coventry
Hi Blankton, are all the lights working in the boot lid? i had intermittent light problems and the lock not working and found out that 6 of the 8 wires in the "rubber pipe" on the left of the boot to the boot lid had broken and were shorting out, i didnt realize as the light switch is usually off or on auto 90% of the time
the lock actuator is built in where the 3 pin plug fits,, its a small motor and gear unit so no rods or steel wires like earlier audis
my lock is part no 4F5 827 505D its basicly the same as yours but has an extra piece of plastic on it to make it easier to move the white bit of plastic to open boot while crawling over the back seats with a stick
 
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blankton

Active Member
Jun 24, 2022
7
2
Hi Greebo, thanks for that. At least I know I'm not missing any parts.

I'll check the lights tomorrow when I have an assistant. If they work OK I'll order the new latch / actuator assembly.
 
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GREEBO222

Active Member
Dec 1, 2019
11
3
Coventry
Yep, also switch the lights on after the boot is open as when i did i could hear the lock actuator working, dont forget to test the reversing lights , and give the "rubber pipe" a wiggle when lights are on too as the wires are tight in there sometimes they touch and sort, other times not, which is why i was getting intermittent light warnings on the dash ,, i was putting it down to old bulbs and dodgy bulb connections and kept putting it off until the boot lock stopped working and i had to climb through the back sests 6 times a day
 
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blankton

Active Member
Jun 24, 2022
7
2
Lights seem ok, so I have ordered a new mechanism.

The mechanism on my car was 5E0827505A. There are two listed in the parts catalogue for my year. The other part was 8k9 827 505A. The 8k9 part seems to be used on a lot more cars, and is therefore a lot cheaper - £18 delivered. The cheapest I could see the exact same part was about £50. I have compared the photos and both look identical, including the 4 pin connector, so I've taken a punt on the cheaper 8k9.
 
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