Roof opens with Key fob but not with inside switch
- Thread starter Nathaniel
- Start date
Could be a bad switch or loose harness connector to the switch. Here is how you get to it. https://www.youtube.com/watch?v=X-7-l_adTlk&t=473s
You might want to use a diagnostic tool to determine if the switch is intermittent, before ripping everything apart.
You might want to use a diagnostic tool to determine if the switch is intermittent, before ripping everything apart.
dumaurier7
Member
I am experiencing the same thing but based on my cars history I am just going to replace the module now and add one more to a long list of module replacements! I had a battery catastrophically fail in the car, shortly after I started experiencing subtle and infrequent malfunctions which steadily grew in intensity and frequency over time. I already tried replacing the switch with a brand new one along with re-coding the module but neither provided a solution. The only thing that's weird is that the module does not report any errors when scanned!
dumaurier7
Member
I replaced the entire switch with a brand new one and it does the same thing, in fact lately the inside switch works intermittently now but the close switch remains functional. Inconsistent operation like this does not indicate a continuity problem (to me) but a module problem, all the modules I've had to change started off the same way until they failed completely.
Could be a broken wire in the harness where it exits the door. The wires are flexing every time you open or close the door. BMW doesn't use the most flexible wires, as people with convertible top problems can attest. I once had a VW that had so many splices I had to replace the harness. Sometimes windows wouldn't work other times the alarm would go off in the middle of the night.
Sorry for answering so late:flybobbie said:
Those two buttons simply put ground to the input ports of the CTM, they are wired directly.
Btw, E89 CTM's can be simply cross-changed without any coding. The only thing to care about is:
CTM's of E89 with a 4th solenoid on the hydraulic pump (software as of 6.30.00 & higher, introduced ~summer 2012) will fail on hydraulic pumps without this 4th one. The solenoid wiring get's checked on initialization.
Elder CTM's (up to sw 6.00.00) operate fine on every E89 from 2009..2016.
Thanks.
I took the switch apart and attached wires to circuit board and reinstalled.
Project was to use a remote control to open and close roof.
Then realised i needed to power module when car unlocked, easy i think, but needed ignition key in..
As we know we can open roof but not close with basic key fob.
Also does car need to detect someone in seat to operate close function.
That little project was abandoned.
I took the switch apart and attached wires to circuit board and reinstalled.
Project was to use a remote control to open and close roof.
Then realised i needed to power module when car unlocked, easy i think, but needed ignition key in..
As we know we can open roof but not close with basic key fob.
Also does car need to detect someone in seat to operate close function.
That little project was abandoned.
Well if your goal is to simulate a SmartTop or Komfort Access, you should be looking around the CTM module. Smarttop in installed inline with the CTM module connector and only uses 5 wires. You could possibly program and use an Arduino to open and close the top. You can buy remote control modules for the Arduino. If you knew someone with a SmartTop you could ask them to identify which connector pins it's using.
I was going to tackle this project a few years ago, but then realized I'm retired and life is too short.
I was going to tackle this project a few years ago, but then realized I'm retired and life is too short.
Same here, after messing with the push buttons and adding wires, it became...what's the point.
Passed a few hours away.
I have a simple 4ch remote switching relays.
There must be some signal that perhaps is replicated in smart top to tell the system in effect ignition is on to close roof.
Have seen the various wire in the wiring diagrams. Might come back to it in summer.
Passed a few hours away.
I have a simple 4ch remote switching relays.
There must be some signal that perhaps is replicated in smart top to tell the system in effect ignition is on to close roof.
Have seen the various wire in the wiring diagrams. Might come back to it in summer.
