DIY: Trunk Strut Replacement - Page 2 - Bimmerfest - BMW Forums



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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #26  
Old 07-01-2015, 08:11 AM
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bluebee bluebee is offline
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For cross reference, the question came up today...
> E39 (1997 - 2003) > Trunk gas pressurize spring
Quote:
Originally Posted by bmw7833 View Post
How to change the trunk gas pressurize spring? I had try to search but found nothing to help me DIY..

Anyone try to DIY before??
Quote:
Originally Posted by Raymond919 View Post
Are you referring to the gas cylinders which hold the trunk lid open? I'll have to change mine also but haven't looked into that yet.
Quote:
Originally Posted by BorisKV View Post
Some people call them trunk struts. I replaced mine couple weeks ago. Very easy to do.
1. Support your trunk in open state and do one side at a time (it is very heavy).
2. Remove retaining semi-ring on top - just push on its ends with flat screwdriver on the opening side. Just make sure you will catch it when it will pop out.
3. On the ball joint side of the strut - you have to use thin flat screwdriver and stick it under that metal flat spring clip and either pull it out or slide it to the side. Basically you have to move it enough so that it will not hold to the ball. Once you will try it you will understand what you need to do.
4. Remove your strut by sliding top portion to the side and wiggling bottom ball joint away from the ball.
5. Installation is in reverse.
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See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 07-01-2015 at 08:13 AM.
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  #27  
Old 07-01-2015, 10:22 AM
monkeyman_69 monkeyman_69 is offline
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+1 to 540 M-Sport. My 528i trunk struts failed and I bought new (non-OEM) units from Bav Auto. They died in a year or so. I ponied up at went to the dealer. Well worth it. I've had success w/ other Bav Auto purchases, but I wouldn't recommend this part, unless they've changed their source.
This is an easy DIY. Done it twice, obviously.
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  #28  
Old 07-01-2015, 10:38 AM
cn90 cn90 is offline
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Four (4) years follow-up.

When first installed the Stabilus, the trunk pops upwardpretty fast.
Four years later, it still pops up but in a more "elegant" way lol...
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  #29  
Old 07-01-2015, 08:57 PM
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bluebee bluebee is offline
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Thanks Cam for the update on the shocks, as it's good to have a long-term report for the next person to learn from.

BTW, does this E38 DIY video mirror the process in the E39?
(If not, I'll remove it.)

See also:
- How to DIY the trunk boot struts (1) & how to replace the touring liftgate hatch shock absorbers (1)
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Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 07-01-2015 at 09:01 PM.
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  #30  
Old 07-01-2015, 09:42 PM
flyride flyride is offline
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The video is consistent for E39 except that the poster doesn't know how the slide clip (opposite the end with the circlip) works. Instead of prying off, just pop it up and slide toward the strut shaft. The clip should be slid up into a similar position before installing and then it just snaps into place, no fuss.
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  #31  
Old 09-04-2015, 02:03 PM
98_540i 98_540i is offline
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Glad I Found this Forum!

Thank you very much to the original poster for providing the DYI guide and giving me the confidence to try this myself.

The price quote I received from my trusted neighborhood BMW auto repair facility (that I use all the time) was $206! Which included $70 for labor and $126 for the two struts).

I purchased a pair of Stabilus Struts from AutohausAZ http://www.autohausaz.com/pn/SG402050 for $60 ($50 plus $10 s/h).

The install took me about 25-min for both struts, however after having done it once, I could probably do it again in under 10-min.

What I learned:
1) Sliding out the strut after removing the top c-clip was not possible (for me) without first removing the clip on the bottom with a very thin flat screwdriver.
2) When replacing the strut, make sure that the top end of the strut is facing up (not down). As an earlier poster mentioned, the trunk will not close if you do not install the strut with the top end facing up.
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  #32  
Old 09-04-2015, 02:13 PM
bobdmac bobdmac is offline
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Welcome to Bimmerfest, 98_540.

It's always good to see a new member who takes the initiative to search for a solution to a problem before asking for help, and I'm glad you found a DIY that was on point for you. But more than that, posting what you learned from the process makes the forum more useful.
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  #33  
Old 09-05-2015, 01:20 PM
EconoBox EconoBox is offline
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Congrats. Are you new to working on cars? It's a challenging and rewarding hobby.
Make sure you read here the next time you have an issue.
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  #34  
Old 11-21-2019, 08:36 PM
cn90 cn90 is offline
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Update after eight (8) years...

The Stabilus Struts from 2011 have now failed!
The trunk closes freely, it just falls down by gravity lol.

Luckily I have 2 spare struts (from junk yard).

PS: The Stabilus was $30/each about 8 years ago. It is now $17/each as time goes by...
Interesting...
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  #35  
Old 11-23-2019, 05:09 AM
EconoBox EconoBox is offline
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Glad to see cn90 still carrying the E39 torch!
Good update.
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  #36  
Old 11-23-2019, 12:19 PM
cn90 cn90 is offline
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LOL,

I started in this forum in 2006.
Most people from that era have gone to something else (new Infinity, Lexus, Tesla etc.).
I am still here driving a 22 yo car lmao...
Until the wheels come off...
Or my gloves come off...
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  #37  
Old 11-26-2019, 05:52 AM
Columbo Columbo is offline
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Mein Auto: BMW E39 520i
Best car in the world.
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  #38  
Old 11-26-2019, 04:06 PM
sneal4600 sneal4600 is offline
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Mein Auto: 2003 540i 110,000 miles
Quote:
Originally Posted by cn90 View Post
LOL,

I started in this forum in 2006.
Most people from that era have gone to something else (new Infinity, Lexus, Tesla etc.).
I am still here driving a 22 yo car lmao...
Until the wheels come off...
Or my gloves come off...
Come to think of it, I probably need to replace my trunk struts. The 2003 540i is approaching 20 years old! A simple DIY for sure.
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