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#1
08-20-2010, 10:39 AM
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Ok guys, so here it is! I finally got the time to take out all the sidings and floorings and all those plastic covers that beautify the rear portion of the X5 E53. Drove it around for a week and discovered all those noises and ofcourse the cause of the TOK TOK I was complaining about!
You wouldn't believe where the TOK TOK was coming from! After all the frustrations, sleepless nights, disassembly hand wounds and enormous time consumed to find this TOK TOK knocking sound....I finally found it! It was ALL the 3 REAR LATCHES that are not aligned and therefore created the unsynchronized sporadic untraceable knocking sounds because they were coming from 3 different sources. The latches locked too loosely (probably due to its age and consistent banging through the years) hence the mis-alignment of all my latches. Solution: I haven't decided on taking down the latches and re-adjusting them so that they lock and fit tightly... So, I just simply TAPED the LATCHES using a rubberized electrical tape. Now the knocking TOK TOK sounds are gone completely after I installed the TAPE. I'm not sure until when the TAPE will hold but I'm seeing some tears already from the center latch after only a few days drive. If and when the metal gets exposed, I will just put another layer of this inexpensive electrical tape! Lesson learned - Most of the time, the reason for a certain situation is the obvious reason and therefore the solution to this simple situation will ofcourse be the simplest solution! Lets avoid complicating matters! hahaha! Hope this helps! Cheers! 
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#2
08-20-2010, 10:51 AM
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i'm going to check my latches as well. i BELIEVE i made a discovery on my X that my TOK TOK was in part coming from the rubber bumper-stop things that the rear hatch presses against when closing.
i did an experiment by wrapping the rubber bump-stops with 1/4" closed cell foam. the noises all but completely stopped. however, the foam loses its resilience fairly quickly...or i may simply need to add more. it all but eliminated the noises on my ride. there's got to be some kind of design flaw with those bump stops. i noticed one of them seems to be spring loaded....while the other is not. when either of them reaches the extent of their movement range, they knock and the sound traverses down the small shaft and through the surrounding sheet metal. i'm going to try your electrical tape trick though...and see if it helps to silence anything else back there which i might currently not even realize i am hearing!
__________________
 2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.2019) -> 100k (9.2021) -> 123k (8.2025) --------------------------------------------------------------------- SOLD : 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.2019) -> 205k (9.2021) SOLD : 1997 328is Coupe - Hellrot Red SOLD : 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP
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#3
08-20-2010, 01:18 PM
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Last edited by chilliwilli; 08-21-2012 at 01:48 PM.
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#4
08-31-2010, 10:13 AM
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Tok Tok gone gone
I have been bearing with this TOK TOK from back of my X5 for last 6 months now...guys at the garage did not have a clue and I tried every trick in the boot but was left frustated...the car I used to love was irritating me every time I drove it and was even thinking of selling it...until I read your message. And now that TOK TOK is gone!... hopefully for ever...
I think your initial hard work did not go waste at all...tremendous effort and thank you! Quote:
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