Backrest warning
#1
Backrest warning
I have the light on .
How do I access the micro switch , remove the trim ?
How do know which seat ?
It did come on after tipping the drivers so that’s the one I will look at first .
” Open circuit “ presume I can adjust it or simply connect up the two wires ?
All help appreciated
How do I access the micro switch , remove the trim ?
How do know which seat ?
It did come on after tipping the drivers so that’s the one I will look at first .
” Open circuit “ presume I can adjust it or simply connect up the two wires ?
All help appreciated
#2
I have the light on .
How do I access the micro switch , remove the trim ?
How do know which seat ?
It did come on after tipping the drivers so that’s the one I will look at first .
” Open circuit “ presume I can adjust it or simply connect up the two wires ?
All help appreciated
How do I access the micro switch , remove the trim ?
How do know which seat ?
It did come on after tipping the drivers so that’s the one I will look at first .
” Open circuit “ presume I can adjust it or simply connect up the two wires ?
All help appreciated
#3
Just to tie this up to remove the lower seat trim there’s a screw at the corners under out of sight - underneath ,see with a mirror .
Remove one nearest the door then with a bit of force slide the trim forwards ( not outwards ) about 2 cm then it will come outwards .
You need to free up the main bit to get to retaining torx that hold the next bit ,the corner piece in place .
To get the corner piece off ( it’s that bit that covers the micro switch btw ) there are two torx screws.
one underfrom behind - see with a mirror after moving the seat Fwds .The other is facing you .
when removed then lift the corner up to disengage it from the upper connection .
once both pieces are off you can access the trip switch .
pry off the outer bit my inserting a screw driver at the front edge ,behind that is the actual switch .
You can see how it works when you tilt the backrest back and forth .
Just easily unplugs .Its held on with a single torx and is adjustable height wise .
Thankfully the part is only about £17 inc tax if you need one .
Fiddling to do but an easy and cheap fix by Bentley standards .
Remove one nearest the door then with a bit of force slide the trim forwards ( not outwards ) about 2 cm then it will come outwards .
You need to free up the main bit to get to retaining torx that hold the next bit ,the corner piece in place .
To get the corner piece off ( it’s that bit that covers the micro switch btw ) there are two torx screws.
one underfrom behind - see with a mirror after moving the seat Fwds .The other is facing you .
when removed then lift the corner up to disengage it from the upper connection .
once both pieces are off you can access the trip switch .
pry off the outer bit my inserting a screw driver at the front edge ,behind that is the actual switch .
You can see how it works when you tilt the backrest back and forth .
Just easily unplugs .Its held on with a single torx and is adjustable height wise .
Thankfully the part is only about £17 inc tax if you need one .
Fiddling to do but an easy and cheap fix by Bentley standards .
#5
Under the corner near the door take this locking screw out
The other torx for the corner visible once the main trim is loose
Then slide it forwards .You can see here how it unlocks once 2 cm forwards .It can then be swung out enough to access further in
The rear torx for the corner piece ( excuse the mirror )
Johnny s pics from his restore thread
Johnny’s pics from his rebuild thread Yours shouldn’t be rusty
Last edited by John Fiammetta; 11-24-2018 at 04:54 AM. Reason: Additional info
#6
When you move the seat back you can see the micro switch operations.
its closed when in the normal position .= closed circuit .
As you move the seat back Fwds
It opens and stays open until the seat is as for Fwds then closes again .When you move the seat back ,back it opens as the seat goes back then finally re closes as it locks back .
So it seems to me it sends a - open , closed , open ,closed pulse to the ECU .
Its as if an ECU needs to read this to be sure the seat back is locked properly.
This prevents I think just a simple short from chaffing or split coffee effectively acting as jumper on the two wires upstream of the switch . As then it’s permanently closed .So I don,t think it can be tricked I did not jump the plug btw this is just my therory ,after watching it work when the trim was removed .
I guess the potential in litigation for an injury from a not so latched seat back needs a belt and braces approach especially in the USA .
its closed when in the normal position .= closed circuit .
As you move the seat back Fwds
It opens and stays open until the seat is as for Fwds then closes again .When you move the seat back ,back it opens as the seat goes back then finally re closes as it locks back .
So it seems to me it sends a - open , closed , open ,closed pulse to the ECU .
Its as if an ECU needs to read this to be sure the seat back is locked properly.
This prevents I think just a simple short from chaffing or split coffee effectively acting as jumper on the two wires upstream of the switch . As then it’s permanently closed .So I don,t think it can be tricked I did not jump the plug btw this is just my therory ,after watching it work when the trim was removed .
I guess the potential in litigation for an injury from a not so latched seat back needs a belt and braces approach especially in the USA .
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