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500E many W124 Wagon and R129 500s
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384 Posts
Discussion Starter #1
hi guys,late 1996 r129

have roof activation issue - not able to remove hardtop manually so cannot progress to check out all switches etc :the problem is

roof switch lit red constantly + roll bar switch 2 reds constant no flashing flickers or rear clicking etc.

when try switch faint solenoid click from under dash.

checked all rear and front fuses,all ok.

can anyone shed any light on this one (seen the thread for later rear catch activation by removing rear wall carpet etc -wish they had left the old manual/spanner releases on newer models !!)

help much appriciated Alan:thumbsup:
 

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03 SL Kleemann, 97 SL320, 95 E320 cab, Tesla X, Ferrari 360, etc
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949 Posts
window synchronization done on model year '95 and younger?

maifair,

let's start with the basic part for any model year '95 and younger: are the windows dropping a fraction of an inch when you open the doors? If not, you will have to synchronize the windows first, following the procedure in your owner's manual.

If the roll bar is up, has it been emergency-deployed? If so, you need to push the "up" position on the roll bar switch for a few seconds before the hydraulics are able to lower the roll bar. The top will not move before the roll bar is down.

Klaus

Top Hydraulics | Rebuilt Convertible Top Hydraulic Cylinders - Top Hydraulics, Inc
 

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500E many W124 Wagon and R129 500s
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384 Posts
Discussion Starter #3
hello klaus,

thanks for reply, yes i have sinc d the windows ,reset the roll bar switch etc.

the only thing i have noticed is that the drivers window does not go up the last

5mm or so when door closes like it should. (the passenger one does).

is there a limit switch tied in with the window raiser ? i am used to the old

pre 96 cars so until hard top is off i am a bit in the dark so to speak.

will h/top pins not fire while roll bar up ?

alan
 

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500E many W124 Wagon and R129 500s
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384 Posts
Discussion Starter #4
so far ............

Took the roof ecu to the Roof ecu specialist in washington county durham
(also has cousin in nottingham that has sl ecu test rig) steve 07757108607.

he kindly ran on the test rig he has and there are no faults within ecu.

He did mention that the later ecus need to be re set if car has suffered a flat battery,which this car had an absolutely dead battery.

Steve very kindly did not charge for the ecu diagnosis ,so nice to know that there are still genuine people in the mysterious world of ecu repair:thumbsup:

can anyone suggest next step - plug into star diagnostics needed ?

or can this be done another way

cheers for any suggestions alan uk
 

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500E many W124 Wagon and R129 500s
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384 Posts
Discussion Starter #5
message to self:) (bridget jones diary)

plugged into star computer , reset itself etc, roof now works perfect BUT so does roll bar ,however the roll bar up light is permanetly lit on dash and when roll bar is up red lights on rb switch are out ,but when bar is lowered lights flash ?? when hood is raised bar comes up with windows (is this normal on a 96 sl )

the fault showing on the star was faulty N52.

any help

alan uk
 
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