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Type :
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starter
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Specification :
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12V1.1KW
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Number of feet :
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10T
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Brand :
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nuojin
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Number :
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0001121008 17780N
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Quality :
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Remanufacture
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Delivery time :
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10 day
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There are slight differences in the installation location and details of the 12V starter among different Audi models, but the overall process is consistent. The core principle is to follow the reverse order of removal, while strictly adhering to torque specifications and wiring standards. Below is the universal installation method, compiled based on common key points of mainstream Audi models such as the A4L and A6L:
First, confirm that the new starter model is compatible with the vehicle. Clean dust and oil from the starter mounting position, and retain any old gaskets or washers for reinstallation in their original positions.
Prepare tools including a torque wrench, sockets, and spanners. Meanwhile, lay down fender covers to avoid scratching the engine compartment paint during operation.
Keep the negative terminal of the storage battery disconnected to prevent short circuits that could damage components during installation.
Locate the mounting position: Most Audi starters are positioned on the side of the engine compartment adjacent to the transmission. For some 6-cylinder or large-displacement models (e.g., Audi A6L 6-cylinder variants), confirm the installation path. If the right front tire and drive shaft were removed during disassembly, reposition these components before installing the starter.
Secure the starter assembly: Fit the new starter to the mounting base and fasten it with dedicated fixing bolts (most models require 2 bolts). Tighten to a torque of 37N・m to ensure the starter is firmly fixed without loosening or misalignment.
Connect electrical terminals: First, connect the starter solenoid plug, then fasten terminal 30 with a nut to a torque of 9.8N・m to prevent poor contact caused by loose wiring. Next, connect the connecting plate between the switch and the field coil to ensure unobstructed electrical conduction.
Organize wiring harness: Install the wiring harness bracket with bolts (torque: 8.4N・m) and secure the harness with 2 clips to prevent abrasion and short circuits during vehicle operation. Finally, close the terminal cover for protection.
Supplement lubrication and sealing: For starters equipped with a reducer and overrunning clutch, apply MoS₂ grease. For sealed surfaces (e.g., the mating surface of models like the Audi 100), apply D3 sealant to ensure smooth component operation and effective sealing.
Restore power supply: Reconnect the negative cable of the storage battery and ensure a secure connection.
Functional testing: Turn the ignition to the start position, observe whether the starter gear engages smoothly and retracts promptly after startup, and listen for abnormal noises during operation to confirm there is no jamming or irregular sounds.
Recheck fastenings: After successful testing, re-inspect the starter fixing bolts and wiring connectors to prevent loosening due to vibration.
Below are the core precautions for installing the 12V starter on Audi vehicles, compiled based on Audi's structural characteristics and official maintenance specifications (referencing the Audi ETKA parts system and ELSA repair manual). These cover critical dimensions such as safe operation, component compatibility, and technical details to ensure no post-installation failure risks:
Disconnect the negative battery terminal throughout the process
Before installation, the negative battery cable must be disconnected (removal order: negative first, then positive; reverse for installation). This prevents short circuits caused by tools touching the starter terminals, which could burn the wiring harness, starter solenoid, or ECU.
After disconnection, wait 5 minutes to discharge residual electrical energy in the circuit (especially for Audi models with start-stop functionality) to avoid accidents from capacitor discharge.
Avoid violent operations and component collisions
The starter gear and solenoid are precision components. Do not strike or drop them during installation, as this may damage the gear tooth surface or cause internal coil open circuits.
For some Audi models (e.g., A4L B9, A6L C8), the starter installation space is narrow. Use dedicated extended sockets to avoid scratching surrounding wiring harnesses, oil pipes, or the catalytic converter.
Protect engine compartment and body components
Lay down fender covers and engine compartment protection mats to prevent tool drops from damaging the paint or sensors (e.g., oxygen sensor, crankshaft position sensor).
Do not place flammable materials near high-temperature components (e.g., exhaust manifold, turbocharger). Ensure hands are free of oil during installation to avoid safety hazards from high temperatures.
Strictly confirm starter model compatibility
There are significant differences in starter models among different Audi models/years (e.g., A4L B8/B9, A6L C7/C8, Q5L). Verify the part number (refer to the Audi ETKA system) to ensure the power, mounting holes, and wiring terminals match the original vehicle.
Example: The starter part number for the Audi A6L 2.0T (C7 year) is 06J 911 023 A. Incorrectly installing a starter for another displacement (e.g., 3.0T) will result in mismatched mounting holes or insufficient starting power.
Retain disassembly marks of old components and inspect new components
When removing the old starter, record the quantity and installation position of gaskets and washers (e.g., some Audi models have positioning gaskets on the mating surface between the starter and transmission). Reinstall these on the new starter in their original positions to avoid poor sealing or misalignment.
Inspect the new starter before installation: The gear should extend and retract smoothly without jamming; terminals should be free of oxidation and looseness; the reducer (if equipped) should have sufficient lubricating oil (pre-applied at the factory, no additional filling required unless specified in the product instructions).
Clean mounting surfaces and wiring terminals
Use a wire brush + cleaning agent (e.g., Audi-specific engine cleaner G 052 162 A2) to remove oil and rust from the starter mounting base and transmission mating surface. Ensure tight fit to prevent bolt loosening due to vibration.
Polish the battery terminals and starter terminals with fine sandpaper to remove oxidation. Apply conductive paste (e.g., Audi-specific conductive grease G 052 512 A2) if necessary to improve conductivity and prevent heat ablation.
Bolt tightening torque must meet standards (refer to Audi ELSA manual)
Circuit connection sequence and specifications
First connect the main power terminal (Terminal 30) of the starter body, then the solenoid control connector, and finally fix the wiring harness bracket. Avoid short circuits caused by incorrect wiring order.
For Audi models with start-stop functionality (e.g., Q3, A5), the starter is additionally connected to the start-stop control module harness. Ensure the connector clip is fully engaged to prevent loosening (loosening will cause the "Start-Stop Unavailable" fault code, which requires clearing with a VAS diagnostic tool).
Lubrication and sealing (per model requirements)
Mating surface between starter and flywheel: For some older Audi models (e.g., A6 C5, Audi 100), apply D3 sealant (part number G 052 142 A2) to prevent oil leakage; newer models mostly use pre-sealed gaskets, no additional glue required.
Meshing surface between gear and flywheel: Do not apply ordinary grease (prone to melting and adhesion at high temperatures). If the gear is dry, apply a small amount of MoS₂ high-temperature grease (Audi-specific G 052 190 A2).
Avoid interference with surrounding components
After installation, check the gap between the starter and surrounding components: Maintain a minimum distance of ≥5mm from the exhaust manifold, no friction with the transmission housing, and ensure the wiring harness is not wrapped around rotating parts (e.g., pulleys).
For some Audi models (e.g., A6L C7 3.0T), the engine mount must be removed before starter installation. After installing the starter, re-tighten the engine mount bolts and check engine levelness to avoid uneven stress on the starter.
Functional testing must be performed in steps
Initial test: Start the engine for only 1-2 seconds. Observe whether the starter gear engages smoothly and retracts quickly after startup. Listen for slipping or abnormal noises to avoid flywheel ring gear wear due to gear jamming (immediately disconnect power for inspection if jamming occurs).
Secondary test: Start the engine 3 consecutive times (30-second interval between each start to prevent starter overheating). Confirm no issues such as weak starting, abnormal noises, or vibration. Ensure no fault lights illuminate on the instrument panel (e.g., starter system fault light, charging system fault light).
The above precautions are based on the Audi Official Repair Manual (ELSA Pro), ETKA Parts Compatibility System, and maintenance standards of authorized Audi 4S stores. They apply to the installation of 12V starters on mainstream Audi models (A3, A4L, A6L, Q3, Q5L, etc.). For model/year/displacement-specific detailed requirements, please provide the vehicle information for further inquiry.
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