Question about 2004 Audi A4

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2005 A4 cab.2.4 petrol Oil level indicator is

2005 A4 cab.2.4 petrol Oil level indicator is coming up and temperature gauge reading 90 before start up. Oil and coolant levels are OK

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  • 55 Answers

These gauges have switches that work by earthing, ie, if you take wire off at sensor end & touch any metal surface on your engine with the wire end the gauge will rise to maximum, it may be the wires are earthing out someplace. There is a voltage stabilizer on back of your dash that maty be going faulty?
Hope this helps.

Posted on Sep 28, 2009

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Posted on Jan 02, 2017

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I'm assuming you have a low oil pressure indicator on the dash. Have you checked the oil level? If it is at correct level, it is possible the oil pressure sender/switch isn't reading the pressure properly. Also it is possible that bearings in the engine are worn out, or that the oil pump isn't working properly. If you don't have a pressure gauge to screw into the engine where the switch is, I would start by replacing the oil pressure switch.

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Hi, the sensor on the engine (right at the rear end of the cylinder head) has two separate outputs. One drives the temperature gauge and the other provides data for the engine control unit. The output for the engine control unit is almost certainly faulty and the sensor will need to be replaced. It isn't an expensive item and's not time consuming to replace (1/2 hr) - so you could ask Audi to do it for you when they replace the ignition coils.
Hope that helps Matt..

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1 Answer

What is the check gauges light


CHECK GAGES light (1) indicates a potential engine failure(low oil pressure, low coolant, coolant overheating) has occurred.
· Check gages and shut down engine. Gages should read as follows: Oil pressure 5 to 10 psi (34 to 69 kPa) at idle; Water Temp gage below 230 degrees (110 C).
· Check engine oil level (Para 2-11) if OIL PRESS gage indicates low reading. Check coolant level (Para 2-11) if Water Temp gage indicates high reading. Notify Unit Maintenance if levels are low.

If CHECK ENGINE light (2) is on, check engine oil pressure gage (3) and water temperature gage (4). If both indicate normal, proceed with mission and then notify Unit Maintenance. If either one does not indicate normal, stop engine immediately and notify Unit Maintenance


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My temperature gauge warning light is coming on periodically...oil level is fine. What should the temperature be at? Is it possibly a sensor problem?


The temperature guage measures the coolant temperature, not the oil temperature -- the normal range is indicated on the guage.

Check your coolant.

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2003 F-250 instrument cluster...


it sounds like you are getting a surge of voltage from your alternator/generator. Very strange.

the dealer can run a diagnostic test & pull fault codes or you can try this. If this helps, please report back & rate as fixya. Thanks. I am curious what you find as root cause. Good luck.

Instrument Cluster Self-Diagnostic Mode
To enter the instrument cluster self diagnostic mode with the engine off, depress and hold the odometer reset button. Turn the ignition switch to the RUN position and hold until the gauges sweep (within five to eight seconds). Depress the reset button once to advance to each stage of the self-test.
Turn the ignition to the OFF position to exit the instrument cluster self-diagnostic mode. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.


Instrument Cluster Self-Diagnostic Mode Odometer display Description GAGE Carries out gauge sweep of all gauges, then displays the present gauge values. Also carries out the check sum test on ROM and EEPROM. All segments illuminated. Illuminates all odometer segments. bulb Illuminates all micro-controlled lamps and LEDs. r #### Returns to normal operation of all micro-controlled lamps and LEDs and displays hexadecimal value for ROM level (used when requesting assistance from the hotline). nr#### Displays hexidecimal ROM level and type as stored in non-volatile memory (NVM). EE ## Displays hexadecimal value for EE level (used when requesting assistance from the hotline). dt #### Displays hexadecimal code for the final manufacturing date. ###C Gas engines display last temperature gauge input value from SCP, temperature gauge will indicate present temperature. Diesel engine displays present temperature analog/digital input in decimal as a ratio, temperature gauge will indicate present temperature. dtc #### Displays a 16 bit DTC in hexidecimal format. DTCs displayed are those detected in continuous operation not during self-test. EnG Displays English speed value being input, speedometer will indicate present speed. m Displays metric speed value being input, speedometer will indicate present speed. tAc Displays the tachometer value being input to the instrument cluster. Tachometer will indicate present rpm. FUEL Displays the present analog/digital fuel level being input to the instrument cluster as a ratio. OIL Displays the last analog/digital reading of the oil pressure switch contact resistance, oil gauge will indicate present level. br Displays the brake fluid level in an analog/digital ratio value. bAt ##.# Displays present battery analog/digital voltage. rhEo Displays present hexadecimal pulse width modulation (PWM) dimming input. rhi, rhS, rho Alternating 1 second display of pulse width modulation (PWM) input duty cycle, SCP hexidecimal dimming step, output driver counts in hexadecimal. Cr RUN/START sense circuit check. PA, Pb, PC, and Pd Displays 8-bit hexadecimal value for the Port A, B, C, and D readings (used when requesting information from the hotline). PE0-PE7 Displays 8-bit hexadecimal value for the Port E0-Port E7 in analog/digital readings

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