A Bunch Of Merged "My New Car / Order" Threads

[Corey_R]

Yeah - everyone is aware of the discrepency in the speed from what the speedo says and what you're actually doing. It's just a surprise (even to me) that VW have decided to show the 'real' speed on the MFD and that the cruise control is then set to it, showing an error on the speedo.
Having said that - I personally like the fact that you CAN see the accurate speed on the MFD, so if that is the official explanation for what is going on here, I'd be ok with that. Hopefully Stoney is ok with that too!

[logger]

. It's just a surprise (even to me) that VW have decided to show the 'real' speed on the MFD and that the cruise control is then set to it, showing an error on the speedo.

I do not think this is intentional. I would expect both the Instrument cluster Digital and Analog speedo's presentations are supposed to match. Mine do as far as I can tell. If Stoneys also matched he might never have noticed his speedo is over reading.

BTW I mentioned in my previous post that correcting the error may effect the ODO accuracy. I was wrong. The correction apparently does not effect the ODO.

This is from Mavs site
"If you receive a customer complaint that the speedometer displays a vehicle speed that is slightly faster than the actual speed, this is normal. The speedometer is operating per manufacturer specifications. Volkswagen does not manufacture vehicles where speedometers read slower than actual speed. To allow for possible differences in overall tire diameter with different tire manufacturers and wheel sizes, a factor is designed into the speedometer function that increases the displayed speed. This factor does not affect odometer readings, which show actual distance traveled. Do NOT replace ANY parts for this condition.”

[Corey_R]

Yeah - although that explanation is bogus (because obviously the ODO will be inaccurate too if the tire circumference changes) it is an accepted thing that all manufacturers do.

[logger]

Yes I agree - I have reservations about that explanation too. Just because it was penned by VW does not make it correct. It is cleverly worded though and if you read it carefully you will notice is does not say "Different tire and wheel sizes will not affect odometer readings" is says "..the factor does not affect odometer readings".

But we digress - Lets hope Stoney gets sorted ASAP.

[Stoney!]

Yeah the mirror slider is shut, that's why i said I didn't wan't it to melt the mirror cover. cause in the closed positions it get very hot so hot to the plactis mirror cover, but gets annoying at night driving with it sitting there.

I disagree totally about the speedo and MFD. MFD Should match exactly what you speedo says. If you set cruise control to 100, it should sit exactly on 100 on the speedo. My friends 103 TDi does, So I don't see why mine shouldn't.

I am fully aware of speedo's being set approx 6 - 8 k's above actual speed and why they do this, and the MFD is also supposed to be set in this manner, matching the analogue speedo, not conflicting with it. After all, there is a reason why that 6 - 8 k's is there in the first place....... not to be over ridden by the MFD

It's the RNS 510 I'm most worried about though, it shouldn't be shutting down like that, and being an intermittent thing I'm worried it may be hard to resolve.

[PassatB6]

*MFD speed is 3 or 4 k's under speedo speed, so cruise control takes the speedo to say, 84 when set to 80...

Stoney!

This is deliberate and on many different cars not just VW. Can't tell you how many times I have been glad of it after not seeing a speed camera!

[gregozedobe]

It's the RNS 510 I'm most worried about though, it shouldn't be shutting down like that, and being an intermittent thing I'm worried it may be hard to resolve.

IIRC there was mention recently somewhere on this forum of a "dead spot" on the F3 between Sydney and Newcastle - that might be what has thrown your RNS510.

[Stoney!]

IIRC there was mention recently somewhere on this forum of a "dead spot" on the F3 between Sydney and Newcastle - that might be what has thrown your RNS510.

Very interesting thanks for that, makes a little sense actually cause when it did come back on it plotted me somewhere out in the ocean lol.... thought it was part of the fault

As far as the MFD FAULT goes, I don't like it, cause when I set cruise to 100 on MFD, the speedo dial sits on 103, so thats hardly saving me from speed cameras i don't see...

But beyond the faults, I adore this vehicle, its started to open up now with 700k's on the clock. Performance is awesome, I also noted they perform much better (even just in gear acceleration) with the TCS switched off, turbo and supercharger are a lot louder also.

Handling is fantastic, on the trip to Newecastle i recorded 6.3/100k's with only 100 odd k's on the clock which i thought was great for such a tight engine, I'm averaging around the 7 - 7.5 mark back in Sydney, which im extremely happy with.... I filled up the tank with 1/4 left in it tonight with 650 k's on the trip meter from full. So prob could have got around 800 out of it.

Stoney!

[cme2c]

I checked out the mirror lights in my 118TSI. They turn off if you flip the visor up, even if the mirror is uncovered so if yours are staying on someting odd is happening. Wonder how hard it it to take the bulbs out?

Not that you should have to do anything.

[coastie]

My speedo needle? sits slightly above the MFD speed, I thought it was the divergence as the dial is slightly to the right and I'm just looking through the angle. Its about 2-3k's past 100 when cruise control is on 100.

The vanity light is a worry, does it shut off with the ignition off?

My RNS510 also had some issues early on with booting up and rebooting randomly. I did the firmware update and its seems solid now. I had an issue with the RVC coming on then going blank which I put down to the slow boot up of the HD.

Good luck with the dealer, this is where VW needs to follow through with great after sales service and problem solving.