Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2004A4 BASE, 4D SEDAN, 3.0 TREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTHEATED GLASS/DEFOGGERSON BOARD DIAGNOSTIC (OBD)AUTOMATIC CLIMATE CONTROL SYSTEM, ELECTRICAL TESTINGCOMPONENTS ACTIVATED BY A/C CONTROL HEAD -E87-, ELECTRICAL TESTINGCHECKING TEMPERATURE SENSORPROCEDURE
2004 Audi A4 Base, 4D Sedan, 3.0 T
Checking temperature sensor: Procedure
2004 Audi A4 Base, 4D Sedan, 3.0 TSECTION Procedure
- Switch ignition off.
- Remove A/C Control Head -E87-. See A/C CONTROL HEAD -E87-, REMOVING AND INSTALLING .
- Connect VAG 1598 A test box with VAG 1598/11 adapter cable to connector -C-. See WIRING AND COMPONENT TESTING USING VAG 1598 A TEST BOX .
- Connect VAG 1598/12 adapter cable to connector -D- (use a second VAG 1598 A test box or connect tester directly to VAG 1598/12 using suitable test leads from VAG 1594 A connector test kit, see WIRING AND COMPONENT TESTING USING VAG 1598 A TEST BOX .
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.