I've just swapped out the RCD510 on our MY11 Passat Highline a few days ago for an AiduAuto RCD330+ 187E (Android Auto and Apple CarPlay) head unit. You will need to do some coding and disabling of existing modules which I'll cover later. I did my coding with an OBDEleven but VCDS, if you have it, with its long coding helper might make the job a little easier. The car doesn't have a reverse camera so I was expecting to have to make some changes to head unit coding to turn this feature off.
Assuming your Tig has a four speaker sound system check to see if you have the fader setting in the sound settings. If not you'll need to enable 4 speaker mode (see what I had to do below). Audio quality seemed to me to improve once the correct setting was enabled. I guess the speakers would now be driven at their proper optimal power level hence providing a better sound output.
What I did:
- Before removing the existing head unit performed an OBDEleven Scan to see what problems if any existed before I started. There were none.
- Removed the dash trim and removed the 4xT20 screws securing the head unit.
- Swapped out the existing head unit with the new RCD330+ and secured it into place with the original screws.
- Physically disconnected the 9w2 bluetooth module which was installed under the drivers seat.
- Performed a second scan to see what new errors presented. Some of these are caused by the speakers being disconnected during the swap-out process so I cleared all these faults and performed another scan. The second scan left me with 3 faults to deal with.
- Two of these faults were rectified by removing/disabling the BlueTooth Telephone module and the Aux Audio Input module from the Gateway Module.
- Ran another OBD Scan and found that only one fault remained. This fault was in the Radio Module. Not sure what I was looking for I examined the settings of the RCD330+ to see if there was anything obvious. I discovered the fader control was not present like it was in the old RCD510. There was however sound going to all four speakers. Perhaps an incorrect speaker configuration???
- Reassembled the dash
- Turned to google to find out more about the current radio long code settings meant. Found that indeed the radio was set to 2 speaker mode.
- Changed the Byte 2 value from 02 to 04 to change the speaker mode to 4 speaker.
- The Radio Module was no longer showing a fault.
- Checked the sound settings and found the fader setting was still missing.
- Performed a reset of the head unit (push and hold LHS knob until the unit restarts).
- Rechecked the sound settings and found the fader function is now present and the Bass response seems to be much better.
- Changed the Byte 3 value from 40 to 00 to turn off the RVC.
- Performed another full scan with the OBD. No Faults found.
- Tested OPS (parking assist). OPS displays on head unit as expected although the car image shown is not a Passat Wagon. (I'll be changing this in long coding Byte 6 once I figure out the correct bits to set)
- Tested ApplePlay
- Paired an iPhone via Bluetooth.
- Tested MFSW button functionality. All buttons working. PTT button is currently set to Mute audio.
- Confirmed, as expected, the MFD no longer displays phone information.
- Confirmed, as expected, the Climate Control functions are no longer displayed on the head unit touch screen
My RCD330+ Long Coding Settings
As Delivered: 0E000240000000
Current :0E000400000000
The below is what what I have learned about the other Byte values.
Byte 1 sets the the type of output required for specific audio options.
Byte 4 is the speaker monitoring settings.
Byte 5 is the equalisation options.
Byte 0 and its setting of 0E is still an unknown. I've seen a lot of examples on the web were this has been set as 00. I don't know what its doing but it doesn't seem to break anything so I'll leave it alone.
For me the upgrade of the RCD510 to the RCD330+ in this car has been extremely worthwhile.
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