Hello everyone, I am looking for some help with an odd problem, whenever the door is opened the windows go all the way down instead of the normal quarter inch drop. The local dealer even switched the window ecu with another 575 they had and that didn't fix the problem. At first they thought it was a micro switch issue so they replaced them, still no go even after resetting the window ecu. A little history: We received the car after a collision shop gave up on it. The car was disassembled, front end damaged, and there were boxes full of parts. We repaired the damage, installed the supplied Novitech body parts and wheels along with everything else that was removed, painted the front and both sides, replaced all the fluids, got it running, and sent it to the local dealer for a major belt service. Does any one know if there would be anything up in the front bumper area as far as wiring that would effect the operation of the windows? We did eliminate the headlight washers and the aftermarket bumper did not have a provision for side marker lamps. Otherwise everything functions properly. The car evan ran good after sitting for a year. Any thoughts? Thanks, Dave Image Unavailable, Please Login
David- Do they go all the way up when you close the door, and do they go all the way down when you use the remote? It certainly sounds like a microswitch adjustment is the problem. The switch is not shutting down the window after it goes down the 8-12 mm recommended in the workshop manual.
Hi Terry, No they don't go up when I close the door except when I turn the key on and use the switch. You mentioned the remote, is there something or a feature that opens the windows when you hit the button? I'm not sure but it seems like the car goes into a panic/safety mode when you open the door. Dave
David- When you press the remote, the system assumes you are going to drive the car and drops the window 8-12 mm. If you do not open the door after X seconds, the window will go back up. You may not have much in the way of tech data. If you go to ferraridatabase.com, you can download 575M owners manuals for free. I also sent Ben, site owner, the P-Codes for the 575M and an early parts catalog. If you need a workshop manual, contact Daniel at Ricambi, FChat's main sponsor. He can probably find one for you.
Taz / David, on my 550, the windows do not respond to the remote at all; only the opening/closing of the door. If I disarm the alarm/immobiliser, then barely lift a door handle, the window drops that inch or so. If I release the door handle without opening the door, the window stays dropped. If I then open the door and then close it, the window raises back up. Are 575's different?
John- Mine immediately go down around 10 mm when I disarm the alarm/immobilizer from the outside with the remote. I did not realize the 550s were different. Dave- Let me look at the WSM and see if there is anything that would help you on the window adjustment. Sounds like something is not sensing the window position.
David- See if this helps. It sounds like a mocroswitch adjustment problem. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Thanks Terry. Right now the car is at the dealer"s service dept. If they can't get it to work I will have to dive into it myself. This will be very helpful since I do not have a service manual. I'll keep you posted. Dave
Hello Tazandjan, tried to pm you with an update but wasn't able to. Wanted to let you know that we solved our 550 window issue. The passenger side window was not lowering when using the interior door handle. Traced it down to a loose wire within it's terminal where the interior door handles microswitch connects. All is well now. Thanks for your help earlier. Have a great week. Gary
Well, the dealer tech is running out of ideas with my window problem. We did find that the horn for the alarm system was missing. I'm wondering if because the horn was not hooked up there was no resistance and the alarm system went into "safe" mode. Could this be anything to do with the windows lowering all the way when the door is opened? I had them order a new alarm horn but the connecter was missing on the car's wiring harness, Ferrari doesn't make one so they can't get it. They told me they have cars in there all the time with the horns burned out and they didn't have any issues, but they were still connected, if that matters. If any one that has a 575 would be so kind as to see: #1, if disconnecting the alarm horn changes the window operation when opening the door, and #2, if I could get someone to get the color codes of the wires that the 4 pin connector of the alarm horn go to on the cars harness. Then I could hard wire the horn to the car's harness. The tech said the wiring diagram doesn't have the colors of the wires so he was at a loss. If this has nothing to do with the window's operation, I guess the next step is to trace each and every wire associated with the windows and see if there are any that are broken or shorted. Any help is appreciated, Thanks to all, Dave
Well after the local Ferrari service department gave up on fixing the problem we had no choice but to roll up my sleeves and get into this at our own shop. After checking continuity from every single wire in the door to the window ecu, we found that even though we had continuity the wires would not push voltage through. It turned out that the connectors from the doors to the chassis were the issue. We disassembled the connector and one by one pinched each wire clip to increase the grip it had on the pin in the chassis connector. After that we were able to get the windows working, and after a small micro switch adjustment they worked properly. Every day at the shop is a new adventure. The alarm now works as it should also (after installing a new siren), so life is good! Dave
Good work Dave. Amazing and disappointing that a Ferrari Dealer Service Department with all the tools and backup support from the factory could not solve this problem and then "gave up". I would be finding a new tech and service centre to take your business to. Well done on finding the problem and posting the results. I'm sure it will help others in the future.
