Thanks Nemesis, but my car doesn't have the Traffic or Parking options that you have. Perhaps those are on the Premium satnav.
I emailed Lexus CS and they said to connect my mobile and use it as a hotspot and they never answered why I can only get one RDS-TMC station. Here's their second response when I said I wasn't happy using my mobile data allowance.
"The car uses 3 data sources:
FM - this pulls in from RDS the Motorways every 15 minutes
DAB - this pulls in from TMC / RDS the A-Roads & Motorways every 15 minutes
Internet - this pulls in from the national database, average road speed sensors in signs / service stations / road sensors, traffic hot spots, predictions, etc for B,A and motorways continuously. The internet data connection, if used for 1 hour morning and night, 2 hours per day, 5 days a week for a month would use less than 6MB of data. There is no bug on FM, but it only looks every 15 minutes for a signal for traffic announcements (TA) on the chosen carrier signal (classic) if none are picked up it wont pull the data in, this is why tethering a phone will give more information, more often."
The implication is that we should get announcements on FM and DAB, but I don't get it on either!!
This was their first response:
"In regards to me previous email I have spoken with our Technical Team and they have advised that you check the following: Hotspot is turned on on the phone / phone is paired for internet data usage / You will need to be signed into your mylexus account."