2008 S40 Trunk Won't Open
#1
2008 S40 Trunk Won't Open
Hello-on my 2008 Volvo S40, the trunk will not open. I used it this morning, then two hours later it won't open. The remote is fine, but I no longer even hear the trunk trying to open. I opened it from the inside (crawled in from the back seats) and the latch mechanism works, but it seems like there is no power going to the trunk latch. Other doors and lights are fine and the car is otherwise in mint condition with no corrosion, etc... Any ideas? Thanks!
#2
Easy stuff first. Check for a blown fuse. If the fuse is fine, but the trunk release won't operate with either the release button above the license plate or remote fob make sure there is power to the servo (not sure what the proper name is for it). If you have power there when you should have then it is the servo itself.
Last edited by pkrface; 03-21-2014 at 09:22 PM.
#3
Will do, thanks! Now I just have to figure out which fuse it should be.
Easy stuff first. Check for a blown fuse. If the fuse is fine, but the trunk release won't operate with either the release button above the license plate or remote fob make sure there is power to the servo (not sure what the proper name is for it). If you have power there when you should have then it is the servo itself.
#5
#6
OK, quick basic idea of how it works. Think of it the same as a power door lock. You can unlock the door with the key(manually) or with the key fob, or with the power lock button on the door, right? Same function with the trunk latch. On the door lock they call that electric servo the "actuator", but it is essentially a servo that physically moves the lock, right? So either that servo or actuator is dead, or it is not getting juice to it when you push the button above the license plate or on the key fob. No power to the servo can occur several different ways. A fuse, pinched wire, loss of ground, bad connector, failed relay, etc. The simplest way to determine whether it is the servo or a power issue is to make sure power is being delivered to the servo when the button is pressed. Just pull the connector off the servo and use a mulltimeter or test light to see if one of the wires gets juice when the button is pressed. If it does then the servo is your issue. I assume you don't hear a click or hum if you listen closely when you push the button? If it were making a slight click or hum when you push the button then you have juice and the servo has just gotten too weak, so replacing it should solve the problem if that is the case. Good luck.
#7
#8
Sorry, not familiar with the details on the S40. Are you talking about the rubber stops that make contact with the opening lip and keep the trunk lid from traveling too far when you close it? Most of those just pop through an appropriate sized hole with a tapered stop on the back side to keep it in place, and they get pretty tight over time as the rubber hardens and seems to attach itself to the metal. Twisting it so it breaks loose and using WD40 or similar to lubricate it usually helps make it easier to remove those.
#9
Yes, the two rubber stops in thie first photo of this article:
How To: Change trunk wiring harness on S40
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How To: Change trunk wiring harness on S40
Can't figure out how to remove so I can get the carpet off.
#10
Hello-on my 2008 Volvo S40, the trunk will not open. I used it this morning, then two hours later it won't open. The remote is fine, but I no longer even hear the trunk trying to open. I opened it from the inside (crawled in from the back seats) and the latch mechanism works, but it seems like there is no power going to the trunk latch. Other doors and lights are fine and the car is otherwise in mint condition with no corrosion, etc... Any ideas? Thanks!
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