Tomtom 920t - RDS-TMC problems.

Saif-Rehman · Posted: Mon Aug 16, 2010 12:52 am Post subject: Tomtom 920t - RDS-TMC problems.

Hi,
I recently aquired a Tomtom 920t pretty cheap, however, once connected to Home i found that the satnav had never been updated. It was still running with an old application and v710.1576 map. So after an evening of downloading and everthing was up to date. But on a recent journey i plugged in the traffic aerial and got the message on the screen - "Your RDS-TMC Traffic Receiver cannot be used in conjunction with the current map" And on the main screen i get a grey circle with a red cross through it. (It was working fine albeit slow and using an old map prior to downloading new info)

Can anyone shed any light on what has happened.

The RDS-TMC is version no: 4V00.083

Many thanks.
_________________
Tomtom 920t
App 8.351 (9982/090518) OS:315187
Europe_West v850.2781

dhn · Posted: Mon Aug 16, 2010 12:54 am Post subject:

Where did you get the 920 from? And what map have you just updated?
_________________
David

Saif-Rehman · Posted: Mon Aug 16, 2010 12:57 am Post subject:

Hi David,

Wow quick reply.....

I bought it cheap on ebay (if you want i will let you know the item number) and i managed to update the Europe-West map along with the USA map.

dhn · Posted: Mon Aug 16, 2010 2:13 am Post subject:

The problem is the rds-tmc antenna that works in North America and on North American maps (with app 8.351) is NOT compatible with the European model that (obviously) only works with the Western_Europe maps.

If you switch maps to NA, does it give the error?
_________________
David

Saif-Rehman · Posted: Mon Aug 16, 2010 2:34 am Post subject:

Yep, it works with the American maps, after trailing through this forum i have concluded that the RDS-TMS receiver is indeed for the american market and what i require is 4v00.013 (european) and not 4v00.083 (america) as what came with the device.

Can anyone confirm please and if so is there anyone here selling the 4v00.013 version.

Thanks

Guivre46 · Posted: Mon Aug 16, 2010 9:58 am Post subject:

v8.351 works with the rds-tmc receiver with the usb connection, it is amplified by connecting to the car charger then to the device. The part number is in my signature. There can be confusion when ordering as the part number on the box refers to the actual box not the contents. I bought from a picture on amazon who redirected my order to a German seller.
_________________
Mike R [aka Wyvern46]
Go 530T - unsupported
Go550 Live [not renewed]
Kia In-dash Tomtom

Saif-Rehman · Posted: Mon Aug 16, 2010 3:23 pm Post subject:

caravanj · Regular Visitor Joined: Nov 01, 2004 Posts: 72

I've got the same problem with a UK bought 720 so it's nothing to do with foreign imports.
It worked ok with Western Europe maps but the last update wouldn't fit onto my 720 ( not enough space) so I installed the Europe Northern map & that's when the RDS stopped working.

mikealder · Posted: Sat Aug 21, 2010 9:50 am Post subject:

Can you have a look in your Northern Europe map folder using Windows Explorer locate the following files and can you report back what file size they are:

tmccodes.dat
traffic.dat

It has been knows for these to be sized at zero Kb on some updates thus rendering the RDS system useless, if they are zero it should be fairly easy to resolve - Mike

Saif-Rehman · Posted: Sat Aug 21, 2010 7:17 pm Post subject:

caravanj · Regular Visitor Joined: Nov 01, 2004 Posts: 72

Hi Mike,
I've now installed the latest Western Europe map onto an SD card & the files are as follows:
tmccodes.dat = 6.38MB

traffic.dat = 90bytes

The RDS doesn't work with this update either!!

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