Question about 2003 Volkswagen Beetle TDI

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Flashing temp light

When i drive the vehicle normally, and the vehicle has reached normal operating temp, the temp light( blue ) comes on and flashes repeatedly for several minutes then goes off. And will return when ever it feels like it. The vehicle is operating normally and feels like its running fine, aswell the coolant reseviour is full when cold and at normal operating temp. * NOTE: the bottom part of the air intake filter box has been removed and has a performance K&N air filter. Increased air into the engine shouldnt have caused this. All sensors are still connected. Whats going on here? has anyone had this happen? If you have the answer to my question i would be very greatful! Thanks

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MOST NEW CARS DONT LIKE AFTER MARKET PARTS THE COMPUTER IN YOUR CAR DOESNT RECOGNIZE THESE PARTS SO YOU MIGHT BE GETTING FALSE READINGS ASK YOUR VW DEALER ABOUT THIS

Posted on May 13, 2010

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Heater donot get hot whil running


It could be a plugged heater core or heater control problem. I assume the blower is working, but the air is cold. The first thing to check is the coolant level, make sure there is coolant in the resivoir. Next see if the temerature gauge reaches the normal operating temperature range. If the gauge reads cold most of the time, it would tell you that the thermsotat is faulty and not allowing the engine to reach full operating temperature. If your car doesn't have a temp gauge, the blue cold engine light might stay on for an extended period of time. The thermostat is supposed to not allow coolant flow in the radiator until the engine reaches operating temperature. If you drive the car for a couple of minutes, from cold start, the radiator or upper hose should be cool until the engine reaches operating temp.

Mar 15, 2011 | 2003 Volkswagen Beetle TDI

1 Answer

Check engine light appears after 30 minutes of


ON-BOARD DIAGNOSTICS Dodge OBD1 Pre 96

1. Cycle the ignition key ON-OFF-ON-OFF-ON within 5 seconds. To cycle the ignition key ON means to turn it only as far as it takes to get the radio to come on. It does not mean to turn the engine on.

2. Count the number of times the "check engine" lamp on the instrument panel flashes on and off. The number of flashes represents the code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses separate individual codes. For example, flash-flash-flash [pause] flash-flash represents the code 32.

A code of "55" represents end of error codes. If this is all you get then no error codes are stored in the computer. This is the normal condition

CODE Description of Trouble Code
11 Timing belt skipped 1 tooth or more from initial learned value, Intermittent loss of either camshaft or crankshaft position sensor, No crank reference signal detected during engine cranking
12 Direct battery input to PCM was disconnected within the last 50 key-on cycles (normal)
13 No change in MAP from start to run
14 MAP sensor voltage too low
15 No vehicle speed sensor signal
17 Closed loop temp not reached or engine cold too long
21 02s sensor problem (oxygen sensor), upstream or down stream
22 Engine coolant temp sensor out of range
23 Intake air temp sensor out of range
24 Throttle Position sensor out of range
25 Idle air control motor circuits, target idle not reached (+/- 200),vacuum leak found
27 Injector control circuit
31 Evap purge flow monitor failure or evap solenoid circuit
32 EGR system failure
33 A/C clutch relay circuit
34 Speed control Solenoid circuits
35 Rad Fan control relay circuit
37 Torque converter clutch solenoid CKT or park/neutral switch failure
41 Generator field not switching properly
42 Fuel pump relay control ckt, Auto shutdown relay control ckt, No ASD relay output voltage at PCM, Fuel level sending unit volts out of range, Fuel level unit No change over miles
43 Multiple/ single cylinder misfire
44 Battery temp sensor volts out of range
46 Charging system voltage too low
51 Fuel system lean
52 Fuel system rich
53 Internal control failure
54 No Cam signal at PCM
55 End of error messages (If you get this only, no errors were found)
62 PCM failure SRI mile not stored
63 PCM Failure EEPROM write denied
64 Catalytic Converter Efficiency Failure
65 Power steering switch failure

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Intermittent hesitation at steady speed.


It could be the spark plugs, plug wires, distributor cap, rotor in the cap, or an O2 sensor. does the check engine light come on?

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2 Answers

Temp light


well blue is OK when thermostat opens it should go off this means the car is at operating temp as long you do not have orange or red temp light should be OK hope this helps

Sep 18, 2009 | 2000 Volkswagen Beetle

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I just purchased a 2000 VW Beetle 1.8 Turbo but, there was no Owner's Manual included with the car. A light has come on my dashboard and i don't know what it's for. It's a blue light in the shape of a...


If the light goes out after engine gets alittle warm, this is normal. Since there is no temp guage, VW uses this light to inform that the engine is cold. When that same light flashes red, it means that the coolant is low or the engine is overheating.

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1 Answer

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