Set both heat controls to HI so the electronic heater is working.

It's mentioned previously here in the forums a couple times about the heater taking a while to heat up.

 

Yes I have seen that on here. I have heat relatively quickly. I am more concerned about the fact that it takes the coolant about 25 mins to get to full operating temp. My gas mileage goes way down when the car is warming up.

I have a 03 passat that gets to full temp in about 5 mins which is why it seems weird.

 

ts normal for diesels to warm up slowly...this is natural since the whole combustion process means cooler temps vs. a spark fired gasoline engine.

there is no way your coolant will get to full temp on an 8.5 mile run.

Also note that diesels do not warm up at idle. so if much of that commute is idling along in stop and go it'll even take longer to warm up.

 

FWIW, my Touareg takes only slightly more time for the engine to reach operating temperature than my previous V8 Genesis (about 1/4 mile farther on the Interstate after leaving work with cold soaked engine). I reach full temp in about 2 miles being gentle on the throttle.

I was expecting it to take longer for the cabin to heat than what it does. Overall, I am pleased.

That said, winters in TN are nothing compared to Chicago.

 

FWIW, my Touareg takes only slightly more time for the engine to reach operating temperature than my previous V8 Genesis (about 1/4 mile farther on the Interstate after leaving work with cold soaked engine.

Lets see, on the interstate so lets assume 60mph. That's a mile a minute. 1/4 mile takes 15 seconds. So your Treg takes 15 more seconds to heat up!

Dang! That's gotta suck! Just kidding!

 

bnajack,
If I read your post correctly, you are stating that your TDI touareg only takes about 2 miles to heat up to full operating temp? Even when it was like 45-50 degrees outside here and like 55-60 in the garage it would take 8.5 miles to heat up all the way.

-Brian

 

Right. The weather here has been about 25-30 degrees in the morning when I leave for work. My car is garage kept. I drive about a mile through the neighborhood to the Interstate and about 1-2 miles on the Interstate when I note the pointer on the gauge reads vertical. (I forgot the number, 200 I think). As I mentioned, I am gentle with throttle until it gets to temp.

In the afternoon after sitting all day (I do not drive to lunch) I drive about two miles and it is at operating temp. At that time of day, it is usually about 45 degrees.

My Hyundai Genesis was about the same.

 

It is normal. I drive to work about 3.5 miles in the 30MPH zone with 8 (?)stop-lights and 2/3 of the trip with bumper-to-bumper traffic (so my average speed would be much less than yours). It has to be above freezing outside so I’ll reach my destination with the engine at an optimal temp of 200F. Yes, the mileage sucks on trips like that. Sure, you can read here on the CT that some folks are averaging 28MPG in the city. I laugh reading many of these posts - their unconscious but a very obvious goal: I’ve got better Touareg than you do! The city cycle of one guy’s Touareg is very different from the city cycle of the other guy’s Touareg. When it gets teens below zero, I can have my work trip MPG at ~18 or even less vs. about ~22-23 in summer months. And, speaking about Passat, the shier superiority in mass of the Touareg engine simply demands more time to warm up this bigger piece of metal.

P.S. And diesel engines do warm up during idling, perhaps at a slower rate than their gasoline brethren.

 

P.S. And diesel engines do warm up during idling, perhaps at a slower rate than their gasoline brethren.

They do somewhat, perhaps its more accurate to say don't bother starting it and expecting to walk out to a warm and toasty vehicle in 10 minutes when its -20 outside.

FWIW the PD TDIs would actually COOL DOWN in stop and go traffic..the heater core would allow enough heat to be removed from the engine that you would lose temp...sucks when its -20 out and you are loosing heat from a running engine.

 

I'm on my 4th TDI. They all take/took a long time to reach operating temperature in cold winter weather.

 

To all of the short commuters commenting...have any of you even thought about your oil temps? It does take oil a lot longer to heat up to operating temperature. What is that doing to your engine on these 8-10 mile trips where the water temp barely gets hot?

 

Verdeo, I think this marks the very first time I agree with you on something .


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To Verdeo:

This is a strange question, neighbor. What is the point of thinking about oil temps? If I have to drive, I drive – long or short trip this will be, whether oil is warmed up sufficiently or not.

 

Not a strange question at all.

What he's saying is that short journies aren't good for your car. Go to work the long way round . . . as long as it's about 20 miles!

 

Yes, i was surprised no one had mentioned how bad short, cold drives are for the engine. There have been a couple of postings, perhaps more, saying that not getting both oil & coolant up to op temp will be costly down the road.

 

My house is from.the town about 6 miles and the car heats up to 90°C for about 3 miles, considering and that i leave it about 2 min on idle. Also when it gets to 90°C it takes more than four hours to completely cool down.. And the temperature outside, this days is about -2 to 5 °C..

 

My daily commute is 4 miles each way. Maybe 6 if I take the long route. Short trips are unavoidable. That gives me an excuse to go on a long drive every weekend. Also why I change the oil at 5K intervals.

 

Just tested this out on the way home. Here are the conditions (this part is extremely important, things will change with these variables):
- Treg was sitting outside all day
- temp was just above freezing.
- Office is 100 yards away from freeway onramp, so basically no time at low speeds
-left the office late so freeway was wide open, got on the onramp and did approx 70-75mph steady the whole time.

Results:

-water temp hits full operating temp in 7 minutes
-oil temp hits full operating temp in 10 mins.

pics or it didn't happen attached:
pic 1 was when it just flipped to 7 min, not fully warmed up
pic 2 was around 45 secs or so after pic 1, now water is warm
pic 3 taken at 9 min point, oil not fully warm
pic 4 shows oil at full temp.

 

I believe this...

So taking this thread from the top, and reviewing it, it seems that the T3 TDI crowd are reporting way slower warmup cycles than the T2 TDI crowd?


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Interesting... I think the only car I've owned that had an oil temp gauge was a 1979 VW Scirocco. I remember the oil took much longer to reach full operating temp compared to the water temp.

 

Do they sell electric heating coils/dipsticks that can inserted somewhere into the radiator or coolant lines for a gas engine? Is there a gas version Webasto? Or electric version? I know they have them for Fords and Dodges.

 

I forgot this is about diesel....what about a Wabasto as long as its not parked in a garage.

 

My commute is also around 8.5 miles one way. I have always considered my driving as severe service and will complete ~7000 mile oil changes (b/c this is about how many miles I clock in a year....)

But as far as engine wear, I'm not overly concerned, it’s under warranty...

But just in case I keep it for more than 10 years I added a little reflective deadener under the hood. On the cold snowy days, those sections on the hood are outline showing the heat is reflected back into the engine bay. On vehicles with darker color paints, it helps keep out the extra sun baking heat.

 

My commute is also around 8.5 miles one way. I have always considered my driving as severe service and will complete ~7000 mile oil changes (b/c this is about how many miles I clock in a year....)

But as far as engine wear, I'm not overly concerned, it’s under warranty...

But just in case I keep it for more than 10 years I added a little reflective deadener under the hood. On the cold snowy days, those sections on the hood are outline showing the heat is reflected back into the engine bay. On vehicles with darker color paints, it helps keep out the extra sun baking heat.

what the....where is your Sound deadening material??

 

I believe this...

So taking this thread from the top, and reviewing it, it seems that the T3 TDI crowd are reporting way slower warmup cycles than the T2 TDI crowd?

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Could this be due to the split coolant system? Heat from the head is used to heat cabin and transmission first, therefore block takes longer to heat up.

 

This is not unique to the T3 since the T2 has the same setup with exception to the 08 V10 which uses a Webasto to heat up the cabin in those. It is just how the V6 TDI is setup with the auxilary electric heater for cabin heat. My car is toasty in a mile or two before I even get to work with the heated steering wheel, seats and the heater...

 

Curiosity got to me. I watched on the way home last night and then again this morning.
Stop and go 40mph max.
44 degrees last night - just under 8 minutes to 200
29 degrees this morning - less than 7.5 minutes to 200

 

OK so the point I am trying to prove is how VARIABLE warm up time is dependent on conditions. I got a chance to run a different scenario this am. here are the conditions (and again conditions are the most critical component):

- Treg was outside overnight
- temp was at -5C / 41F overnight.
-Slow going in the burbs this morning, I hit every red light and there was some roadwork going on so the first 5-6 minutes was really slow moving, once I got on the 2 lane road I was doing around 55mph steady state.

Results:

-water temp hits full operating temp in 13 minutes (vs 7 minutes in the example I gave above) - almost double the time
-oil temp hits full operating temp in 17 mins (vs 10 mins in the example above)

pics or it didn't happen attached:
pic 1 is at the 11 min point, water not fully warmed up oil temp flat
pic 2 is at the 12 min point, water not fully warm yet
pic 3 13 min point, water at full temp, oil is not there yet
pic 4 is a bit blurry, but oil is not quite at full operating temp at the 16 min point
pic 5 shows oil at full operating temp

So conditions are key. I know if I do a cold start at near freezing temps, and run into stop and go traffic the times will stretch out even further. As soon as I get the opportunity I'll snap similar pics to show how it plays out.

 

- Treg was outside overnight
- temp was at -5C / 41F overnight..

psst -5C=23F

 

I just got my 012 tdi 17k miles back yesterday after telling dealer the foot mode was week and the fan was noisey in foot mode. "Auto" actaully gave me no heat at the drivers feet. I guess the ductwork was loose and not fit together properly and they coupled it all back together. Also the Throttle control vlave was replaced, and I was told excessive tire wear on the inside of the front tires was normal(they where pristine when i rotated em to the front with nice square tread blaocks and now the inner shoulder is half gone. I gues this is normal with the suspension set up on the Treg? 30 k tires I guess you guys where right!

I am a Lexus owner also and I am believing you guys about VW and the need to have a warrantee at all times. I keep remembering German cars have "soul".

Hope this helps with yur heat issu kinda funny though the engineers could not fit the ductwork properly and/or the assemblers couldn't assemble.

 

Plus also the fog lite I was told was in need of replacement now works, saved 31 bucks, future electrical problems I hope not!

 

I garage my car during the day, so when I left,the car was around 50 degrees. It still took about 8 minutes to warm to 200 degrees, but was > 120 degrees within 3 minutes. I'm generally not concerned about extra wear on the engine. As the manual states, you're not even supposed to warm up the TDI before driving because the car is more efficient at warming up the car whole driving rather than sitting still.

 

*** I'm not recommending this for the TDI, just mentioning it as an observation ***

It's fairly common to see diesel big rigs with the radiator grill partially or completely covered in cold weather. Here's such a cover for a Dodge Ram diesel pickup:

http://ptboutique.com/items/dodge-r...-heaters/mopar_-m_dodge_ram_diesel_cold_weather_grille_cover_03_-_up-detail.htm