Ok, I have the sat nav option from Alpine built in at factory fit. I have never had the pleasure of receiving a green TMC logo, always red in colour. I have done the usual 'three fingered salute' but sadly, i have never seen any logged entries in the bottom value box of the TMC diagnostic/unit check screen. So I rang Honda UK, who advised me to contact a local dealer. Rather than using my own dealership in Cannock, I tried Wolverhampton, for a possible different reply, who were quite sure that the TMC should work via a software update, but not by an updated disc, as the updated discs only carry updated maps. So it would be a software update by the dealer workshop to begin receiving TMC information again. @Holdcroft Honda Can you guys help with any clarity on the software update method for TMC, as described above? My current genuine satnav disc is relevant to the age of manufacture, 2007/8, and does display the TMC logo amongst other logos on the disc text label, so maybe there has been a change in TMC set-up/software over the time? Anyway, my car is due in for an AirCon Condenser replacement under warranty next week, so I shall see what they say about a software update for the TMC part of the Alpine Sat Nav system. I will let you know what happens. In the meantime I have carried out a bit of a web search for info on the TMC service in the UK, and various results from websites and forums are listed below, I hope they help you: HonestJohn Forum Does Traffic Message Channel work in the UK | Motoring discussion | Back Room Forum | Honest John Unlike most of mainland Europe we have to pay for TMC services because UK regulators missed the boat and allowed TMC services to fall into private hands - currently there are two operators - RAC Trafficmaster Telematics (for Trafficmaster receivers) and iTIS Holdings for TMC signal on ClassicFM. In short, TMC in the UK is mostly transmitted over ClassicFM, whose signal is too weak for many hand-held SatNavs to receive it reliably. Many satnavs do in theory pick it up in the UK, but rarely or never get a good enough reception. In-built satnavs normally receive it much better as the car's antenna is much better than the trailing wires (or whatever) provided with the hand-held device. Depends on how you are receiving it. If it's via an inbuilt car system the chances are that the manufacturer was too mean to pay for the TMC subscription for the UK and you need an updated SatNav disc with the relevent codes. Most recent SatNav discs have something like "including TrafficMaster" or something similar on the disc text label. If it's a portable unit using a FM receiver chances are it is simply not picking up a signal very often. They are all pretty much useless as the local radio stations in the UK are too low a signal. Wikipedia Traffic message channel - Wikipedia, the free encyclopedia Traffic Message Channel (TMC) is a technology for delivering traffic and travel information to motor vehicle drivers. It is digitally coded using the ALERT C protocol into RDS Type 8A groups carried via conventional FM radiobroadcasts. It can also be transmitted on Digital Audio Broadcastingor satellite radio. TMC allows silent delivery of dynamic information suitable for reproduction or display in the user's language without interrupting audio broadcast services. Both public and commercial services are operational in many countries. When data is integrated directly into a navigation system, traffic information can be used in the system's route calculation. An RDS-TMC receiver is a special FM radio tuner that can decode TMC data. Satellite TMC receivers use a dedicated data channel that is broadcast as part of much larger broadcast digital audio channels. TMC data is decoded by matching event and location codes against look-up tables of phrases and locations. The results can be translated into audio or visually displayed on a Sat nav device. The look-up tables must be implemented in a service-specific database mapped to geographic routes and intersections. As with the navigation systems themselves, periodic upgrades are needed as the road system changes. This provides opportunities for vendors to generate revenue. PR Newswire Association LLC. Trafficmaster Completes RDS TMC Contract With Honda -- CRANFIELD, England, May 12 /PR Newswire UK/ -- Trafficmaster Completes RDS TMC Contract With Honda CRANFIELD, England, May 12 /PRNewswire/ -- - Honda Uses Trafficmaster's Traffic Information in its Satellite Navigation Systems Trafficmaster Plc (LSE: TFC), the UK's leading provider of real time traffic information, announces the completion of its RDS TMC (Radio Data System Traffic Message Channel) contract with major motor manufacturer, Honda Motor Europe. Trafficmaster will provide live traffic information to Honda vehicles in the UK equipped with satellite navigation systems with a TMC receiver. This announcement marks a major breakthrough for Trafficmaster in the development of its RDS TMC programme. Honda undertook a thorough evaluation and decided to work with Trafficmaster, as its service proved to offer highly accurate and timely traffic information via the RDS TMC channel. The National RDS TMC service offered by Trafficmaster gathers traffic data in real time from the company's established network of over 7,500 roadside nationwide sensors covering 8,000 miles of roads and is supplemented with incidental data from our partner the RAC. The data is then transmitted through the RDS bandwidth supplied by Trafficmaster's commercial radio partners - GWR Radio Group, Chrysalis Radio and Capital Radio, who together ensure that motorists across mainland Britain can receive the Trafficmaster service. Paul Ormond Head of Press & PR at Honda said, "Honda has a culture that demands quality in both its own products and those of its suppliers. In our evaluation we concluded that the accuracy, timeliness and quality of the traffic data provided by Trafficmaster through its RDS TMC service was ideally suited to the needs of our customers. The traffic data will benefit our customers as it will be incorporated into our satellite navigation systems and used to help drivers avoid traffic jams as they are navigated to their destination." Stuart Berman, Chief Executive, of Trafficmaster said, "Through completing this deal with Honda, Trafficmaster has obtained another important route to market for its unique traffic information. We expect RDS TMC to become an increasingly important revenue stream for Trafficmaster and will be seeking further deals with other major motor manufacturers." About Trafficmaster Founded in 1988, Trafficmaster Plc is the UK's leading journey management company providing high quality satellite navigation, traffic data and vehicle tracking systems. Trafficmaster's traffic information is derived from its unique state-of-the-art network of nationwide static roadside sensors and transmitters that gather and distribute traffic data from over 8,000 miles of motorway and trunk routes. Traffic data is then delivered to the customer through a number of screen or speech-based receivers. These include a variety of in-car products and services that include its satellite navigation - Smartnav, Trafficmaster Monitor, YQsquared, Oracle and Freeway units. Traffic information can also be obtained by phoning the 1740 service, which is run in partnership with the RAC and the UK's main mobile phone operators. The traffic data provided through Trafficmaster RDS TMC is used, in conjunction with third party satellite navigation systems, to route drivers around congestion. The data is broadcast on licensed radio networks owned by GWR Radio Group, Chrysalis Radio and Capital Radio and is provided to original equipment manufacturers (OEMs) or direct to automotive manufacturers. Trafficmaster is now one of two players within this specific market. SOURCE Traffic Master Plc - - - Updated - - - Ok, I have just spoken to HH who confirm that a software update at the dealership is required to get the TMC working again, but it comes with a cost.