If your Audi A5’s 12V battery is dead, you’ll typically use the engine‑bay jump-start terminal for the positive connection and a solid engine ground for the negative. The donor car provides the remaining power. Always consult your owner's manual for your exact model year, as locations can vary.
Understanding where to connect jump-start points on the Audi A5
On most recent Audi A5 models, the 12V battery is located in the trunk, but jump-starting is performed via dedicated engine-bay terminals. This setup helps minimize risk near the trunk battery and allows a clean ground reference.
- Positive jump terminal in the engine bay: Look for a red protective cover marked with a + symbol, usually near the front-right area of the engine bay or adjacent to the fuse/relay box. Use this dedicated point for the dead car’s positive connection.
- Ground point for the dead car: Attach the negative lead to a clean, unpainted metal surface on the engine block or chassis, such as a bolt on the engine or a designated grounding point.
- Donor vehicle connections: On the donor car, connect its positive terminal to the dead car’s positive jump terminal, and its negative terminal to a suitable ground near its own engine or chassis.
These points are designed to minimize sparks near the battery and to provide a reliable ground. If you cannot locate the engine-bay positive terminal, refer to the owner's manual for your exact year and model variant.
Step-by-step jump-start procedure
Follow these steps in order to jump-start the Audi A5 safely and efficiently.
- Position both vehicles close enough for the jumper cables to reach, but ensure they do not touch. Park in Park (automatic) or Neutral (manual) with parking brakes engaged. Turn off all electrical accessories and ignition in both cars.
- Open the hood and locate the engine-bay positive jump-start terminal on the Audi A5 and the corresponding positive terminal on the donor vehicle.
- Connect one end of the red (positive) jumper cable to the Audi A5’s engine-bay positive jump terminal.
- Connect the other end of the red (positive) jumper cable to the donor vehicle’s positive terminal.
- Connect one end of the black (negative) jumper cable to the donor vehicle’s negative terminal.
- Connect the other end of the black jumper cable to a solid, unpainted metal ground point on the Audi A5 (engine block or chassis), away from the battery and moving parts.
- Start the donor vehicle and let it run for a few minutes to charge the Audi A5’s battery. If the A5 has trouble starting after a few minutes, wait a bit longer and try again.
- Once the Audi A5 starts reliably, keep the engine running and carefully remove the jumper cables in reverse order: first remove the black cable from the Audi A5’s ground, then the black cable from the donor, then the red cable from the donor, and finally the red cable from the Audi A5.
- Keep the A5 running for at least 15–20 minutes or drive to allow the alternator to recharge the battery fully. If the battery won’t hold a charge, consider replacing it or having the electrical system checked.
The exact steps can vary slightly by year, so if you’re unsure, consult the owner’s manual or contact a dealer for model-specific instructions.
Safety considerations and tips
Jump-starting a car involves dealing with high currents and potentially volatile components. Use caution and follow these safety tips.
- Ensure both vehicles are in Park/Neutral with parking brakes engaged, and keep them from touching.
- Do not lean over the batteries or place your face directly above them. Sparks can occur when connections are made.
- Inspect jumper cables for damage; use heavy-duty cables rated for the amperage required by your engines.
- Do not attempt to jump-start if you notice swelling, leakage, or a damaged battery. If in doubt, call roadside assistance.
- Avoid smoking or open flames near the batteries. Do not disconnect or connect cables while the engine is running if advised by your manual.
By following proper connection points, a careful step-by-step procedure, and essential safety cautions, you can jump-start an Audi A5 without damaging the electrical system or battery.
Summary
For most Audi A5 models, the positive jumper cable should be attached to the engine-bay positive jump-start terminal (red cover marked +), and the negative lead should be grounded to a solid metal point on the engine or chassis. The donor vehicle provides the opposite ends of the red and black cables. Start the donor car first, then the A5, and remove cables in reverse order once the A5 runs smoothly. Always verify the exact locations and steps in your year’s manual, as configurations can vary.
What year Audi A5 to stay away from?
Experiencing issues with your Audi. A5. Certain model years are more prone to problems generally avoid the 2008 to 2012 models due to first generation.
Why is my Audi A5 not starting?
Fuel injectors can get clogged due to poor-quality fuel or a lack of regular maintenance. When this happens, the engine may run rough, have trouble starting, or experience reduced power. Fuel injector problems can lead to increased fuel consumption and inefficient engine performance.
Where exactly to attach jumper cables?
Negative terminal black to donor then the final connection will go to a ground. Source.
How to start Audi A5 with dead battery?
Is right here there's a little battery symbol or a little key symbol you place that there put your foot on the brake. And hit the start. Button. So hopefully that's helpful.