The ends of the trunk lip/spoiler is starting to left off the trunk. What adhesive have you guys used that works well? Thanks

 

https://a.co/d/3kjh19j

I applied this to several spoilers, lip spoilers in particular, and years later, and through many winters and summers. It is still firmly attached. The key is to clean the surfaces really well and then heat up the surfaces with a blow dryer or very carefully with the heat gun, both sides, the car as well as the underside of the spoiler, and use two people to perfectly apply your spoiler and apply pressure

 

3M but sometimes I use a surface cleaner first then apply the adhesive

 

Stuff I've stuck onto cars with the appropriate thickness of 3M VHB tape has stayed stuck on real good, I have prepped with 70% isopropyl, and done it on a warm to hot day for best results.

 

Thank you gentlemen. I guess I was trying to get away with not having to take off the entire thing and redoing the adhesive. Question now is how do I remove the damn thing without cracking the paint.

 

If it is an aftermarket spoiler, depending on how it is attached, you may be able to carefully remove it by gently prying it off. If it is a factory spoiler, I'm not sure if applying heat will soften the adhesive enough to allow removal.

 

It came with it on from factory/dealer.

 

I have the same problem with factory installed spoilers both on trunk lid and rear window. Ends are loose and I have taped them with the best 3M tape I can find several times. The first time I had the dealer do the trunk lid spoiler as it came loose during the CPO extended warranty, but it did not take long it was loose again. Then tried myself, no luck.

The problem here is that taking these parts loose is a big job and then re-installing takes at least two people and it has to go in correct location for the first touch. No easy job. And then it is loose again...

So, I had this 2013 S550 with a very nice trunk lid spoiler. I don't think it was from factory, but perhaps could have been...? It had developed the problem already before I took the ownership of it and as I had bad experience even with the dealer trying to glue the spoiler back on in my 2010 E550 I tried something else: I went to Lowes hardware store and bought Heavy Duty Liquid Nails (or something similar it was). Some very strong building adhesive.

This is applied with the gun and the tip can be cut to very narrow point. I pried the spoiler out just for a small crack and applied this glue in. It made very strong bond and for the about a year after this fix I still had the car (before a young lady decided that it is better to put her car in the front right corner of mine and total both) it stayed like it was part of the trunk lid.

They make several colors of these adhesives, but it probably is not easy to find yours unless your car is black, like mine, but they also make some of this stuff clear that should work for everybody.

The only thing with this is that the spoiler may not be able to be removed later without severe paint damage, but I think I will keep the spoilers on the car as they really enhance the looks of it. No need to remove.

I don't drive my E much anymore, so I have not done it yet, but as this thread reminded me, I may just do it at the end of the week.

 

Below pictures of my little spoiler project.

The window spoiler is a bit ugly as I did not remove the multiple tapes I had used trying to keep spoiler ends attached to the car. I just added the clear adhesive and may have to do it again if the tapes layers fail between them, but I don’t think this adhesive will fail. After all failed tape layers are glued it will be all set.


Trunk lid spoiler.

Loose window spoiler with multiple failed tapes.

Window spoiler after using clear Lock Tite glue.

Clear Lock Tite construction adhesive.

 

I tried and failed a couple of times with the two trim pieces on the rear of my 2010 E550, one on the glass and the second on the trunk lid. Used 3M products with activator, etc, etc - no joy. My car went in for some paint work and the shop said they could fix them, whatever they did has worked for over 5 years and shows no sign of failing; they may have said they'd paint them to help adhesion, but I can't swear to it. Might be worth a call.