Hi all,
I have a 2007 NCV3 motorhome conversion that is having a strange locking problem. One day I was sitting in the van reading, engine off, and the locks suddenly started freaking out, locking and unlocking, for no apparent reason that I am aware of.
At the end of it although the locks settled down, they refused to stay locked, unlocking as soon as a lock command was sent.
Eventually, the center locking button on the console ceased to operate altogether, and even if I key locked the van, the locks would unlock themselves within an hour.
One thing about this setup is that it has a Viper 7706v alarm system that is connected to the CAN bus via a DBALL2 interface. This system has been working fantastic for more than a year.
I reset and re-synced the DBALL2 interface, to make sure that the Viper was not fighting the system, and it did reactivate the center console switch, and all of the door locks started working again, except the driver’s side.
I can key lock the driver’s side, and remote lock the rest and it will stay locked, but when I remote lock everything, there is not even a sound from the driver side lock area.
I tried the DBALL2 reset again to no avail, as well as removing fuse #1 on the under dash panel, but that did not help.
The window and power mirror controls on the driver’s side work, so I know that the connection is probably not the problem.
My next step (when I get into town) is to remove the DBALL2 entirely from the can bus, to make sure the viper is unrelated to the problem.
There are a couple of weird scan codes that came up via Carly for Mercedes:
0. Motor Control:
<--------------------------->
ME - Motor/Engine Electronics (MB: 0024468640):
- ECU OK, no fault code
<===========================>
1. Airbag:
<--------------------------->
AB - Airbag (MB: 9064461142):
- ECU OK, no fault code
<===========================>
2. Instrumentation:
<--------------------------->
UCP - Upper control panel (MB: 9065450307):
- Fault: Under voltage detection . Under voltage is not detected until after 5 s and a voltage of < 9.5 V.
- Code: 009036
<--------------------------->
IC - Instrument cluster (A1) (MB: 9064468021):
- ECU OK, no fault code
<===========================>
3. Systems:
<--------------------------->
EZS - Electronic ignition switch (MB: 9065454808):
- ECU OK, no fault code
<--------------------------->
ESP - Electronic stability program (MB: 9064460153):
- ECU OK, no fault code
<--------------------------->
SCM [MRM] - Steering column module (MB: 9065402745):
- ECU OK, no fault code
<--------------------------->
SAM-F - Signal acquisition and actuation module front (MB: 9065450601):
- ECU OK, no fault code
<===========================>
4. Body:
<--------------------------->
DCM-FL - Door control module front left (MB: 9068204026):
- Fault: Component E6/5 (Left exterior mirror turn signal lamp) or lead has Open circuit.
- Code: 00900D
<===========================>
5. Other:
Is it possible the rapid lock cycling blew a fuse? The owner’s manual is not very clear on what fuses might affect the driver’s locking system (probably for obvious reasons).
So basically the current status is: The remotes and central lock button work fine, and all locks except the driver’s door function normally.
I would love to get some ideas and feedback on what to check next. It’s hard to believe that a locking actuator freaked out and died and caused this, so I want to run everything else down first.
I have done a bunch of searches, but the Mercedes machine gun lock thing isn’t really what the problem is.
Thanks in advance!
I have a 2007 NCV3 motorhome conversion that is having a strange locking problem. One day I was sitting in the van reading, engine off, and the locks suddenly started freaking out, locking and unlocking, for no apparent reason that I am aware of.
At the end of it although the locks settled down, they refused to stay locked, unlocking as soon as a lock command was sent.
Eventually, the center locking button on the console ceased to operate altogether, and even if I key locked the van, the locks would unlock themselves within an hour.
One thing about this setup is that it has a Viper 7706v alarm system that is connected to the CAN bus via a DBALL2 interface. This system has been working fantastic for more than a year.
I reset and re-synced the DBALL2 interface, to make sure that the Viper was not fighting the system, and it did reactivate the center console switch, and all of the door locks started working again, except the driver’s side.
I can key lock the driver’s side, and remote lock the rest and it will stay locked, but when I remote lock everything, there is not even a sound from the driver side lock area.
I tried the DBALL2 reset again to no avail, as well as removing fuse #1 on the under dash panel, but that did not help.
The window and power mirror controls on the driver’s side work, so I know that the connection is probably not the problem.
My next step (when I get into town) is to remove the DBALL2 entirely from the can bus, to make sure the viper is unrelated to the problem.
There are a couple of weird scan codes that came up via Carly for Mercedes:
0. Motor Control:
<--------------------------->
ME - Motor/Engine Electronics (MB: 0024468640):
- ECU OK, no fault code
<===========================>
1. Airbag:
<--------------------------->
AB - Airbag (MB: 9064461142):
- ECU OK, no fault code
<===========================>
2. Instrumentation:
<--------------------------->
UCP - Upper control panel (MB: 9065450307):
- Fault: Under voltage detection . Under voltage is not detected until after 5 s and a voltage of < 9.5 V.
- Code: 009036
<--------------------------->
IC - Instrument cluster (A1) (MB: 9064468021):
- ECU OK, no fault code
<===========================>
3. Systems:
<--------------------------->
EZS - Electronic ignition switch (MB: 9065454808):
- ECU OK, no fault code
<--------------------------->
ESP - Electronic stability program (MB: 9064460153):
- ECU OK, no fault code
<--------------------------->
SCM [MRM] - Steering column module (MB: 9065402745):
- ECU OK, no fault code
<--------------------------->
SAM-F - Signal acquisition and actuation module front (MB: 9065450601):
- ECU OK, no fault code
<===========================>
4. Body:
<--------------------------->
DCM-FL - Door control module front left (MB: 9068204026):
- Fault: Component E6/5 (Left exterior mirror turn signal lamp) or lead has Open circuit.
- Code: 00900D
<===========================>
5. Other:
Is it possible the rapid lock cycling blew a fuse? The owner’s manual is not very clear on what fuses might affect the driver’s locking system (probably for obvious reasons).
So basically the current status is: The remotes and central lock button work fine, and all locks except the driver’s door function normally.
I would love to get some ideas and feedback on what to check next. It’s hard to believe that a locking actuator freaked out and died and caused this, so I want to run everything else down first.
I have done a bunch of searches, but the Mercedes machine gun lock thing isn’t really what the problem is.
Thanks in advance!