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RCD330 Plus Noname 187B turns off after 30 minutes
RCD330 Plus Noname 187B installed in a VW Golf Mk5 with an ACC 12V cord running from the fuse box. Firmware 5614.
The unit turns off after 30 minutes no matter what it is doing.
It looks like some kind of inactivity time out, although the unit is active.
Pressing any buttons within the 30 minutes interval does not help.
The only thing that seems to delay the unit switching off for longer is an active phone call. May that be related to bluetooth?
This topic describes a similar issue: https://www.reddit.com/r/RCD_330/comments/1ap7ruw/unit_turns_off_after_30_mins/
What may be causing this issue? Any help is appreciated.
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This is actually the first time I have seen this exact issue.
Normally, if the vehicle engine is NOT running and you simply power on the RCD330 to play music or listen to the radio, the unit will automatically shut down after about 30 minutes. This is expected behavior because the CAN Gateway is not properly powered or awake, so it cannot maintain communication with the RCD330.
The RCD330 relies heavily on CANBUS communication for power management and sleep/wake status.
I recommend checking the following points carefully:
- Verify that you connected to a real ACC 12V source
On the Golf Mk5, the proper ACC source is usually fuse position #5 or #6 in the fuse box.
Even if those fuse positions are already occupied, that is not a problem.
You should:
- remove the original fuse
- insert it into a fuse tap / fuse shared adapter
- then install the fuse tap back into the original fuse position
A lot of shutdown issues come from using the wrong fuse position that does not provide proper ignition-switched ACC behavior.
- Check CANBUS communication status
Please test this:
- Press and hold the power button on the RCD330
- Watch the display carefully
If you see the circular clock image on the screen, that usually means communication between the RCD330 and the CAN Gateway is working normally.
If the clock image does NOT appear correctly, then there is likely a CANBUS communication issue.
In that case, carefully inspect:
- CANBUS High (CAN+)
- CANBUS Low (CAN-)
- Quadlock connector pin integrity
- adapter harness quality
Even a partially loose CAN connection can cause abnormal sleep behavior.
- Possible final solutions
If the issue still remains, I recommend one of these solutions:
Option A:
Modify the ACC wiring directly on the original Quadlock harness and additionally install a CANBUS simulator/emulator.
This is usually the safest dual-protection solution because:
- the ACC wire controls ignition behavior
- the CAN simulator maintains proper sleep/wake communication
- battery drain risk is significantly reduced
Option B:
Replace the old CAN Gateway with a newer compatible revision.
Older Mk5 gateways sometimes do not fully support modern RCD330 power-management logic.
In many retrofit cases, upgrading the gateway completely resolves:
- random shutdowns
- battery drain
- delayed sleep
- wake-up problems
Thanks for the detailed reply.
I verified that the 12V ACC wire is connected to fuse position #5 exactly as in the picture above.
However the clock test seems to have failed - I could not get the clock displayed as described although some times I've seen the round clock when switching the unit on.
So it looks like there's indeed a CAN communication issue. Although except for the problem I described I didn't notice any other issues with the unit - it seems to work fine and even the time is picked up from the built-in car clock.
I wish there would be a software fix that would simply disable turning off the unit after 30 minutes even if there is no signal received via CAN bus.
But if that's not an option can I order the original CAN gateway? Does it require VCDS to install?