2015 IS350C trunk does not stay open

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Oct 5, 2025 | 09:14 PM
  #1  
I just got a used IS350C and the trunk does not stay open. Is it supposed to open fully when the trunk open is pressed on the dash? Because it does not. The trunk button in the glove box is in the on position (depressed). When I open it manually (it is heavy!) it does not stay up, and falls closed. See video. Any idea what the problem is?


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Oct 5, 2025 | 10:09 PM
  #2  
New lift struts maybe?
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Oct 6, 2025 | 02:44 AM
  #3  
Baqemc,

I have a 2011 IS250C here in the UK. The trunk button only releases the lock for the lid to be lifted manually. Certainly, Inactive's reply may be right and one or both of the struts needs to be replaced. I have not had any problems in this (or any other) area.

Mike

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Oct 6, 2025 | 07:07 PM
  #4  
OEM trunk lid lift support OEM part 6454053010 (2010 - 2015 ISC 250/350)

Prestige Lexus of Ramsey ($51.72 each / Free shipping on $100.00 orders)
https://parts.prestigelexus.com/p/63...454053010.html


Lexus IS250/IS350/ISF Trunk Strut Replacement video tutorial;


Trunk Lift Support Struts Replacement
https://www.clublexus.com/forums/is-...placement.html

Aftermarket Trunk Support Struts
https://www.clublexus.com/forums/is-...rt-struts.html

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Oct 7, 2025 | 12:59 PM
  #5  
Quote: Baqemc,

I have a 2011 IS250C here in the UK. The trunk button only releases the lock for the lid to be lifted manually. Certainly, Inactive's reply may be right and one or both of the struts needs to be replaced. I have not had any problems in this (or any other) area.

Mike
Same on my 2010 IS350C here in the US. The trunk button on the dash and from the clicker just unlocks it and then I have to manually lift it. I will admit its a bit heavy, but it does stay up for me.
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Oct 7, 2025 | 06:53 PM
  #6  
Yes , trunks struts but I would get the heavy duty ones that will open the trunk and lift fully open without lifting. Don’t have the brand but I would suggest those. I plan installing a pair on my 07’ IS350 next month, check them out , there should be a few brands to choose from.
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Oct 8, 2025 | 03:35 AM
  #7  
I believe the trunk lid for the convertibles are heavier, and wonder if the OEM lift supports may be option if not a completely different design from the sedans;
2010-2015 IS250/350 C trunk lid support OEM part 6453053032
2006-2013 IS250 / IS350/ IS F trunk lid lift support OEM part 6453053014
Strongarm Lift supports;
https://strongarmliftsupports.com/fi...sid=5RjSZItXuy
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Oct 8, 2025 | 06:59 PM
  #8  
Replaced trunk stays
Thanks all for the replies.
Dealer used two oem parts. I assume each side different part number

64530-53032 and

64540-53012

working great now


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