AUDI DIAGNOSTIC TROUBLE CODE (DTC) OVERVIEW

The Diagnostic Trouble Code (DTC) overview is organized according to VAG and SAE (OBD-II) trouble
codes.

MIL Switching Conditions
A=MIL Triggered on first occurrence
B=MIL Triggered on second occurrence
C=Non Emission related Fault - Service light only
D=Non Emission Fault - No warning light

DTC (VAG) DTC (SAE) MALFUNCTION TEXT (Component Number) MIL CONDITION
16485 P0101 Mass or Volume Air Flow Circuit - Range/Performance A
16486 P0102 Mass or Volume Air Flow Circuit - Low input A
16487 P0103 Mass or Volume Air Flow Circuit - High Input. May be due to a low battery if found with
17988 (P1580) A
16496 P0112 IAT Sensor - Temp High - Circuit Low - G42 A
16497 P0113 IAT Sensor - Temp Low - Circuit High - G42 A
16500 P0116 Engine Coolant Temperature Circuit - Range/Performance Problem A
16501 P0117 Engine Coolant Temperature Circuit - Low Input (High Temp) A
16502 P0118 Engine Coolant Temperature Circuit - High Input (Low Temp) A
16504 P0120 Throttle Position Sensor A - Circuit Malfunction A
16505 P0121 Throttle Position Sensor A - Circuit - Performance Problem - Out of Range A
16506 P0122 Throttle Position Sensor A Circuit - Low Voltage Input A
16507 P0123 Throttle Position Sensor A Circuit - High Voltage Input A
16509 P0125 Cooling System - Temp Too Low to Enter Closed Loop - G62 B
16514 P0130 O2 Sensor Circuit - Malfunction (Bank 1 Sensor 1) A
16515 P0131 O2 Sensor Circuit - Voltage Low (Bank 1 Sensor 1) B
16516 P0132 O2 Sensor Circuit - High Voltage (Bank 1 Sensor 1) A
16517 P0133 O2 Sensor Circuit - Slow Response (Bank 1 Sensor 1) B
16518 P0134 O2 Sensor Circuit - No Activity Detected (Bank 1 Sensor 1) A
16519 P0135 O2 Sensor Heater Circuit - Malfunction (Bank 1 Sensor 1) A
16520 P0136 O2 Sensor Circuit - Malfunction (Bank 1 Sensor 2) A
16521 P0137 O2 Sensor Circuit - Low Voltage (Bank 1 Sensor 2) B
16522 P0138 O2 Sensor Circuit - High Voltage (Bank 1 Sensor 2) A
16524 P0140 O2 Sensor Circuit - Slow Response (Bank 1 Sensor 2) B
16525 P0141 O2 Sensor Heater Circuit - Malfunction (Bank 1 Sensor 2) A
16534 P0150 O2 Sensor Circuit - Malfunction (Bank 2 Sensor 1) A
16536 P0152 O2 Sensor Circuit - High Voltage (Bank 2 Sensor 1) A
16537 P0153 O2 Sensor Circuit - Slow Response (Bank 2 Sensor 1)
16538 P0154 O2 Sensor Circuit - No Activity Detected (Bank 2 Sensor 1) A
16539 P0155 O2 Sensor Heater Circuit - Malfunction (Bank 2 Sensor 1) A
16540 P0156 O2 Sensor Circuit - Malfunction (Bank 2 Sensor 2) A
16542 P0158 O2 Sensor Circuit - High Voltage (Bank 2 Sensor 2) A
16543 P0159 O2 Sensor Circuit - Slow Response (Bank 2 Sensor 2)
16544 P0160 O2 Sensor Circuit - No Activity Detected (Bank 2 Sensor 2) A
16545 P0161 O2 Sensor Heater Circuit - Malfunction (Bank 2 Sensor 2) A
16554 P0170 Fuel Trim - Malfunction (Bank 1) A
16555 P0171 Fuel Trim - System Lean (Bank 1) B
16556 P0172 Fuel Trim - System Rich (Bank 1) B
16557 P0173 Fuel Trim - Malfunction (Bank 2) B
16558 P0174 Fuel Trim - System Lean (Bank 2) B
16559 P0175 Fuel Trim - System Rich (Bank 2) B
16684 P0300 Random Misfire Detected - Any Cylinder B
16685 P0301 Cylinder #1 - Misfire Detected A or B / Blink
16686 P0302 Cylinder #2 - Misfire Detected A or B / Blink
16687 P0303 Cylinder #3 - Misfire Detected A or B / Blink
16688 P0304 Cylinder #4 - Misfire Detected A or B / Blink
16689 P0305 Cylinder #5 - Misfire Detected A or B / Blink
16690 P0306 Cylinder #6 - Misfire Detected A or B / Blink
16691 P0307 Cylinder #7 - Misfire Detected A or B / Blink
16692 P0308 Cylinder #8 - Misfire Detected A or B / Blink
16706 P0322 Ignition/Distributor Engine Speed Input Circuit - No Signal A or B / Blink
16711 P0327 Knock Sensor #1 Circuit - Low Input (Bank 1 or Single Sensor) A
16716 P0332 Knock Sensor #2 Circuit - Low Input (Bank 2) A
16721 P0337 Crankshaft Position Sensor Circuit - Low Input A
16725 P0341 Camshaft Position Sensor Circuit - Out of Range/Performance A
16784 P0400 Exhaust Gas Recirculation (EGR) - Flow Malfunction B
16785 P0401 Exhaust Gas Recirculation (EGR) - Flow Insufficient B
16786 P0402 Exhaust Gas Recirculation (EGR) - Flow Excessive B
16795 P0411 Secondary Air Injection System (B2) - Incorrect Flow B
16806 P0422 Main Catalyst Efficiency - Below Threshold (Bank 1) B
16816 P0432 Main Catalyst Efficiency - Below Threshold (Bank 2) B
16824 P0440 Evaporative Emission Control System (EVAP) - Purge Malfunction B
16825 P0441 Evaporative Emission Control System - Incorrect Purge Flow A
16826 P0442 Evaporative Emission Control System - Leak Detected (small leak) B
16836 P0452 Evaporative Emission Control System - Pressure Sensor - Low Input B
16837 P0453 Evaporative Emission Control System - Pressure Sensor - High Input
16839 P0455 Evaporative Emission Control System - Leak Detected (gross leak)
16845 P0461 Fuel Level Sensor Circuit - Range/Performance B
16885 P0501 Vehicle Speed Sensor - Range/Performance A
16890 P0506 Idle Control Module - RPM Lower Than Expected A
16891 P0507 Idle Control Module - RPM Higher Than Expected A
16894 P0510 Throttle Position Sensor - Closed Switch B
16989 P0605 Internal Control Module Read Only Memory (EPROM) Error B
17090 P0706 Transmission Range Sensor Circuit - Range/Performance A
17091 P0707 Transmission Range Sensor Circuit - Low Input D
17509 P1101 O2 Sensor Circuit (B1-S1) Voltage Too Low/Air Leak D
17510 P1102 O2 Sensor Circuit Heating Circuit (B1-S1) - Short to B+ A
17511 P1103 O2 Sensor Circuit Heating Circuit (B1-S1) - Output Too Low A
17512 P1104 O2 Sensor Circuit (B1-S2) Voltage Too Low - Air Leak A
17513 P1105 O2 Sensor Circuit Heating Circuit (B1-S2) -Short to B+ A
17514 P1106 O2 Sensor Circuit (B2-S1) Voltage Too Low - Air Leak A
17515 P1107 O2 Sensor Circuit Heating Circuit (B2-S1) - Short to B+ A
17516 P1108 O2 Sensor Circuit Heating Circuit (B2-S1) - Output too Low A
17517 P1109 O2 Sensor Circuit (B2-S2) Voltage Too Low - Air Leak A
17518 P1110 O2 Sensor Circuit Heating Circuit (B2-S2) - Short to B+ A
17535 P1127 Long Term Fuel Trim - System too Rich (Bank 1) A
17536 P1128 Long Term Fuel Trim - System too Lean (Bank 1) B
17609 P1201 Cylinder #1 Fuel Injector Circuit - Electrical Malfunction B
17610 P1202 Cylinder #2 Fuel Injector Circuit - Electrical Malfunction A
17611 P1203 Cylinder #3 Fuel Injector Circuit - Electrical Malfunction A
17612 P1204 Cylinder #4 Fuel Injector Circuit - Electrical Malfunction A
17613 P1205 Cylinder #5 Fuel Injector Circuit - Electrical Malfunction A
17614 P1206 Cylinder #6 Fuel Injector Circuit - Electrical Malfunction A
17615 P1207 Cylinder #7 Fuel Injector Circuit - Electrical Malfunction A
17616 P1208 Cylinder #8 Fuel Injector Circuit - Electrical Malfunction A
17621 P1213 Cylinder #1 Fuel Injector Circuit - Short to B+ A
17622 P1214 Cylinder #2 Fuel Injector Circuit - Short to B+ A
17623 P1215 Cylinder #3 Fuel Injector Circuit - Short to B+ A
17624 P1216 Cylinder #4 Fuel Injector Circuit - Short to B+ A
17625 P1217 Cylinder #5 Fuel Injector Circuit - Short to B+ A
17626 P1218 Cylinder #6 Fuel Injector Circuit - Shod to B+ A
17627 P1219 Cylinder #7 Fuel Injector Circuit - Shod to B+ A
17628 P1220 Cylinder #8 Fuel Injector Circuit - Shod to B+ A
17633 P1225 Cylinder #1 Fuel Injector Circuit - Short to Ground A
17634 P1226 Cylinder #2 Fuel Injector Circuit - Short to Ground A
17635 P1227 Cylinder #3 Fuel Injector Circuit - Short to Ground A
17636 P1228 Cylinder #4 Fuel Injector Circuit - Short to Ground A
17637 P1229 Cylinder #5 Fuel Injector Circuit - Short to Ground A
17638 P1230 Cylinder #6 Fuel Injector Circuit - Short to Ground A
17639 P1231 Cylinder #7 Fuel Injector Circuit - Short to Ground A
17640 P1232 Cylinder #8 Fuel Injector Circuit - Short to Ground A
17645 P1237 Cylinder #1 Fuel Injector Circuit - Open Circuit A
17646 P1238 Cylinder #2 Fuel Injector Circuit - Open Circuit A
17647 P1239 Cylinder #3 Fuel Injector Circuit - Open Circuit A
17648 P1240 Cylinder #4 Fuel Injector Circuit - Open Circuit A
17649 P1241 Cylinder #5 Fuel Injector Circuit - Open Circuit A
17650 P1242 Cylinder #6 Fuel Injector Circuit - Open Circuit A
17651 P1243 Cylinder #7 Fuel Injector Circuit - Open Circuit A
17652 P1244 Cylinder #8 Fuel Injector Circuit - Open Circuit A
17656 P1250 Fuel Level Too Low A
17733 P1325 Cylinder #1 Knock Control Limit Attained D
17734 P1326 Cylinder #2 Knock Control Limit Attained D
17735 P1327 Cylinder #3 Knock Control Limit Attained D
17736 P1328 Cylinder #4 Knock Control Limit Attained D
17737 P1329 Cylinder #5 Knock Control Limit Attained D
17738 P1330 Cylinder #6 Knock Control Limit Attained D
17739 P1331 Cylinder #7 Knock Control Limit Attained D
17740 P1332 Cylinder #8 Knock Control Limit Attained D
17747 P1339 Crankshaft Position/Engine Speed Sensors Cross connected D
17748 P1340 Camshaft/Crankshaft Position Sensors (B2) - Out of Sequence A
17749 P1341 Ignition Coil Power Output Stage #1 - Short to Ground A
17751 P1343 Ignition Coil Power Output Stage #2 - Short to Ground A
17753 P1345 Ignition Coil Power Output Stage #3 - Short to Ground A
17799 P1391 Camshaft Position Sensor (B2) - Short to Ground A
17800 P1392 Camshaft Position Sensor Open (B2) - Short to B+ A
17801 P1393 Ignition Coil Power Output Stage #1 - Electrical Malfunction A
17802 P1394 Ignition Coil Power Output Stage #2 - Electrical Malfunction A
17803 P1395 Ignition Coil Power Output Stage #3 - Electrical Malfunction A
17804 P1396 Engine Speed Sensor - Missing Tooth A
17808 P1400 EGR Valve Circuit - Electrical Malfunction A
17809 P1401 EGR Valve Circuit - Power Stage Short to Ground A
17810 P1402 EGR Valve Circuit - Short to B+ A
17815 P1407 EGR Temperature Sensor - Signal too Low A
17816 P1408 EGR Temperature Sensor - Signal too High B
17817 P1409 Tank Ventilation Valve - Electrical Malfunction B
17818 P1410 Tank Ventilation Valve - Short to B+ A
17819 P1411 Secondary Air Injection System (B2) - Restricted Flow A
17822 P1414 Secondary Air Injection System (B2) - Leak Detected B
17826 P1418 Fuel Level Sensor - Signal too High B
17828 P1420 Secondary Air Injection System Control Module - Electrical Malfunction
17829 P1421 Secondary Air Injection System Control Valve Circuit - Short to Ground A
17830 P1422 Secondary Air Injection System Control Valve Circuit - Short to B+ A
17831 P1423 Secondary Air Injection System (B1) - Flow too Low A
17832 P1424 Secondary Air Injection System (B1) - Leak Detected B
17833 P1425 Tank Ventilation Valve - Short to Ground A
17834 P1426 Tank Ventilation Valve - Open Circuit A
17842 P1434 Secondary Air Injection System Pump Relay Circuit - Short to B+ A
17844 P1436 Secondary Air Injection System Pump Relay Circuit - Electrical Malfunction A
17848 P1440 EGR Valve Circuit - Power Stage Open A
17858 P1450 Secondary Air Injection System Pump Relay Circuit - Short to B+ A
17859 P1451 Secondary Air Injection System Pump Relay Circuit - Short to Ground A
17860 P1452 Secondary Air Injection System Pump Relay Circuit - Open Circuit A
17878 P1470 EVAP Emission Control System L.D.P Circuit - Malfunction A
17879 P1471 EVAP Emission Control System L.D.P. Circuit - Short to B+ A
17883 P1475 EVAP Emission Control System L.D.P. - Malfunction Signal Circuit open A
17884 P1476 EVAP Emission Control System L.D.P. - Malfunction/Insufficient Vacuum A
17908 P1500 Fuel Pump Relay Circuit - Electrical Malfunction A
17910 P1502 Fuel Pump Relay Circuit - Short to B+ A
17912 P1504 Intake Air System Bypass Air Determined A
17913 P1505 CTP Switch not Closing - Open Circuit A
17914 P1506 CTP Switch not Opening - Short to Ground A
17917 P1509 IAC Circuit - Electrical Malfunction A
17918 P1510 IAC Circuit - Short to B+ A
17919 P1511 Intake Manifold Changeover Valve Circuit - Electrical Malfunction A
17920 P1512 Intake Manifold Changeover Valve Circuit - Short to B+ D
17951 P1543 Throttle Actuation Potentiometer - Signal too Low D
17952 P1544 Throttle Actuation Potentiometer - Signal too High A
P1545
P1559
17988 P1580 Throttle Actuator (B1) Fault - May be caused by low battery if found with 16487 (P0103) A
17990 P1582 Idle Adaption at Limit B
18008 P1600 Power Supply (B+) Terminal 15 - Low Voltage B
18010 P1602 Power Supply (B+) Terminal 30 - Low Voltage D
18014 P1606 Rough Road Spec. Engine Torque ABS-SG - Electrical Malfunction A
18019 P1611 MIL Call-up Circuit/Transmission Control Module - Short to Ground D
18020 P1612 ECM - Incorrectly Coded A
18021 P1613 MIL Call-up - Circuit Open or Short to B+ A
65535 P0603 Control Unit Failure or Internal Control Module Keep Alive Memory (KAM) Error or Power
Failure to Control Unit or Bad Ground Contacts or No Faults Recorded (If MIL Not Illuminated) A
65535 No Faults Recorded (If MIL Not Illuminated) A
65535 Control Unit Faulty (In Some Systems)
P0217 Temp Light - Engine Hot A
P0218 Temp Light - Transaxle Hot D+Temp Lamp
P0326 Knock Sensor - Constant Knock D+Temp Lamp
P0351 Ignition - Faulty D
P0352 Ignition - Faulty D
P0420 Converter - Low Efficiency D
P0443 EVAP Purge - Circuit Fault A
P0500 VSS Sensor - No Signal D
P0560 Battery Voltage - Out of Range A
P0561 Battery Voltage - Unstable D
P0562 Battery Voltage - Low D
P0563 Battery Voltage - High D
P0565 Cruise Control - Circuit Fault D
P0571 Brake Switch - Circuit Fault D
P0572 Brake Switch - Low Voltage D
P0573 Brake Switch - High Voltage D
P0600 PCM - No Serial Data D
P0601 EPROM - Fault A
P0602 PCM Program - Fault A
P0604 PCM RAM Memory - Fault A
P0606 PCM Processor - Fault A
P1782 Engine/Transmission Data Electrical Connection Ignition Intervention. Also check for loose ECM
power relay. A

1. Take the valet key, put it into the ignition and turn the key to the "on" position, just prior to starting the car.

2. Roll down the driver's side window (not required, but a good idea in case there's a problem).

3. Exit the car and close the door.

4. With a second key, physically lock the doors (don't use a remote).

5. Take the first remote to be programmed, press one of the buttons and the lights will flash once. Wait 10 seconds and press the unlock button. The doors should unlock. That first transmitter is now programmed.

6. Lock the door again (physically) with the key, (not the remote).

7. Press one of the buttons twice, the lights will flash twice. Wait 10 seconds and press the unlock button. The doors should unlock. The second transmitter is now programmed.

For a third transmitter press the button 3 times and for a fourth press 4 times.

Paul ads: "Make sure that to test the newly program remotes, the original key is removed from the ignition. Someone might be a bit frustrated trying to test it with it still in 'program' mode." - 2/6/2004

From the article linked below:

"The higher-output 165-kW (225-hp) engine uses a high compression ratio (8.9:1) for a turbocharged unit. The 1.8-L engine was extensively modified to attain the higher output reliably. The pistons, connecting rods, and big-end bearings were uprated to accommodate the higher combustion pressures. The double-mass flywheel and clutch were modified to match the greater performance. The intake manifold, turbocharger, and exhaust manifold are new.

A Type K04 turbocharger forces air into the combustion chamber via two charge-air intercoolers. Compared to the less powerful 132-kW unit, a modified airflow path, together with a larger air cleaner, ensures that the air reaching the engine has a temperature only about 30¡C higher than ambient. This 80% charge-air intercooler efficiency keeps the engine supplied with an optimum flow of oxygen-rich air. Maximum boost pressure at the intake manifold can reach 200 kPa (29 lb/in2).

The engine's torque curve is impressive, with 280 N•m (207 lb•ft) available from 2200 to 5500 rpm. With it, the TT can accelerate from 0 to 100 km/h (62 mi/h) in 6.4 s and has a top speed in the region of 243 km/h (150 mi/h). Flexibility is also impressive, needing only 11.2 s to accelerate from 60 to 120 km/h (37 to 75 mi/h) in fifth gear. The TT equipped with this engine and quattro all-wheel drive has a total fuel consumption of 9.2 L/100 km, according to the EU 93/116 test.

The "lower-output" 132-kW (180-bhp) engine still manages a specific output of 100 hp/L. It uses a relatively smaller KKK Type K03 turbocharger, its lower moment of inertia allowing the engine to respond more rapidly to accelerator pedal movements. Boost pressure builds more quickly for reduced "turbo lag." Torque at lower engine speeds is aided by optimized throttle-butterfly and boost-pressure settings. Audi says the turbocharger and five valves per cylinder layout work ideally together, since the potential of the turbocharger can be used to the fullest extent by the large total cross-sectional area of the valves in each cylinder.

An even higher compression ratio of 9.5:1 ensures high efficiency and low fuel consumption. According to the EU 93/116 standard, total fuel consumption for the front-wheel-drive version is 8.0 L/100 km. Torque of at least 235 N•m (173 lb•ft) is available from 1950 to 5000 rpm. Front-wheel-drive and quattro TTs equipped with this engine can accelerate from 0 to 100 km/h (62 mi/h) in 7.4 s, while the top speed of front-wheel drive at 228 km/h (142 mi/h) is slightly greater than the 226 km/h (140 mi/h) of the quattro model. In fourth gear, the 132-kW TT Coupe can accelerate from 60 to 120 km/h (37 to 75 mi/h) in 9.8 seconds. "

http://www.sae.org/automag/newenginereview/audi.htm

The TT in the Audi TT stands for Tourist Trophy which is annual race run on the Isle of Man where a beefed up car was called a "TT". The event usually includes many different types of cars and motorcycles.

Only if you want it to be! :)

The TT is gender neutral. It has a strong stance, piercing eyes and fierce speed but a nice curvy buttocks, a gentle drive and is certainly 'cute'.

A quick look at the AudiWorld forum, though, you will see that most TT owners are male (and happily so) but there a number of much loved and highly sought after TT women.

Only thing that is gender specific is the person in the drivers seat.

Sorry to say it is not.

The TT does have a turbo, but it is a single turbo engine. Most people confuse "TT" with "Twin Turbo" when it really stands for "Tourist Trophy".

Josh updates: "My girlfriend was hit on by a guy who said he had a twin turbo audi. I immediately think early S4. Unfortunately this genius who happens to be a lawyer thinks his TT is a twin turbo. I say line his "twin turbo" TT up next to my GTI with a single bumped up turbo. To tell you the truth I have never heard of a guy who seriously hits on a girl and uses his TT as a tool. People like this should go back to driving Monte Carlos and transmaro birds. " - 1/15/2006

Peter adds "It is not a twin turbo - but that is not nessesary. By just chipping the 225 hosre TT you can get 270 hore and topspeed of 165 mph and if you really want to have power there are kits with different turbo chargers available up to 360 horse - those kits are still "autobahn approved" and the car will have a livetime of mor than 250,000 miles" 6/17/2005

You can get an after market sunroof put on your TT? There are a few companies that do it and there are a few owners who have done it with much success.

Audi TT Car Club Photos

The 225 comes with a turbo timer that runs coolant through the turbo after the car has been shut down. The 180 does not have this feature so it best to let it cool down for a minute or so after heavy driving before turning it off.

Gene adds: "If you are using the 180hp TT then yes it would robably be better to get a turbo timer for 'peace of mind' whereas the 225hp does run coolant for the turbo when you turn the car off. several brands are considered good such as apexi pen light turbo timer which is discreet and stylish or Blizt DTT turbo timer which automatically calculates the time needed to cool the turbo down."

Winston answers: "Official factory shop manuals are available from Bentley Publishers (link below) as CD-ROMs or web-subscriptions. Other manuals and literature available also." - 4/26/2004

Richard adds: "I ordered the manual from Audi last May/2006 and from Bentley 9/2006. They are still back ordered. Doesn't look to me like Audi is going to make anymore manuals... If so - wonder why they don't just put it on the internet? It is a struggle not having a manual!!!" 1/6/2006

http://www.bentleypublishers.com/

<p>The Audi TT like most cars, will last as long as it is cared for. There are Audi TT owners out there with over 300,000 miles and going.</p>

Jake's Answer:

I have not seen anyone do this, but I assume it would be possible if you took out the dash and replaced the bulbs or tinted them.

There is no built in way of doing it though.

Peter adds "Maybe you can do this but if i where you i wouldn'd - the reason is the anti theft protection in the dashboard. it is a very sensible system - parting out the dashboard give the computer the information - someone is manipulating (maybe stealing) the vehicle. if this happens you are really in trouble - you will have to tow the vehicle to an Audi dealer - explain to him what happened and then he has to plug in the Audi computer and neuralise the system by a code that comes online from Wolfsburg, Germay via satellite through the Audi computer in your dashboard - so now guess how much trouble this causes and how much money this costs ...." 6/17/2005

Generally the TT can get about 24 in the city and up to 30 on the highway. Some have pushed it as far as 32 MPG in long steady trips.

Christopher adds "Just bought a 2000 TT and drove it on a 1,700 mile trip and consistently got 33 mpg - all on the interstate going a little above the speed limit." 4/7/2005

The big obvious ones are to look at price and power. The are both great cars (obviously, they are TTs after all) but the 225 will add more power in terms of torque and horsepower.

If you can handle the price, go for the 225. If the extra couple of grand is too much to handle, the 180 is a great car and with a chip can perform just as well as the 225 (ask Larry).

Mobil 1 Tri-Synthetic Formula 15W-50 is especially suitable for high-performance cars, particularly hot-running or heavily loaded vehicles and special high-tech imports."

Flash Point, ASTM D 92, °C (°F):
0w-30
238 (460)

5w-30
235 (455)

10w-30
243 (470)

15w-50
245 (473)

Flash Point, ASTM D 93, °C (°F):
0w-30
211 (412)

5w-30
210(410)

10w-30
221 (430)

15w-50
223 (433)

5W-30 has the lowest flash point of them all(bad). 15w-50 has the highest(good). Seems to me like 0w-30 would be better to use before 5w-30

Here is Mobil's comparsion of the 4 types:
Mobil 1 Tri-Synthetic Formula 0W-30, 5W-30, 10W-30:
Flow at -54°C (-65°F); pump at temperatures lower than similar SAE viscosity-grade conventional oils. Save gasoline, exceed newest Energy Conserving Requirements.

Mobil 1 Tri-Synthetic Formula 15W-50:
Flows at -48°C (-55°F), pumps at temperatures as low as many conventional SAE 5W-30 oils. Provides superior high-temperature protection for high-performance and high-revving cars.

(Looks like I can run 15W-50 all year round)

All Mobil 1 Tri-Synthetic Series products:
Provide outstanding protection of gasoline, diesel and turbocharged car and light truck engines.
Provide excellent engine protection during high-temperature operation.
Extend engine life by reducing wear.
Allow faster cold starts.
Help prevent oil breakdown; keep engines cleaner.
Are compatible with conventional oils.
Provide maximum reserve capacity in a motor oil.
Reduce oil consumption.

Winson answers: From the Audi Website "1909 - Audi Automobilwerke is established in Zwickau In 1909 August Horch had a dispute with the supervisory board of A. Horch & Cie. Motorwagen-Werke AG and as a result, left the company he had begun. Shortly after, on July 16, 1909, he established a second company, Horch Automobil-Werke GmbH, in the same city. Horch lost the ensuing legal dispute over the company same. His solution was to use the Latin translation of his name (which means "hark!"). The new company name, Audiwerke GmbH, became effective on April 25, 1910." - 12/12/2004

TT Buyer's Demographic (2000):

- median age: 40
- median household income: $100,000 with a signifigant percentage above
- male: 70%
- college grad: 70%
- married: 60%
- households with children: 20%

Key competitors:
Z3 Roadster and Coupe
Honda S2000
Mercedes SLK
Porsche Boxster

"Buyers will be self-confident. We'll see opinion leaders and unconventional individualists. These are people whose pro-active approach to life would be enhanced by the sporting character and individuality of the TT."

BZ Answers:

Yes, it is safe unless you are going over a hundred miles an hour down the road.

Everything you need is in the trunk / hatch. You need to jack up the car on a jack point, remove the tire (there is a little device to remove the plastic lugnut caps) and replace it with the spare.

There is also a large plastic bag in your kit you can put the old tire in to save your interior.

More detailed instructions are in your manual.

YES! The net advice is to buy snow tires or leave it in the garage.

Also recommended is to buy a set of extra wheels so you can swap between the snows and the summer tires more easily.