Audi Key Battery

Posted : admin On 1/26/2022

To check your key fob battery, simply remove the cover to your key fob. Remove the battery by hand or by using a small flat head screwdriver. If your battery is fine, and you just purchased your key fob, have your local Audi dealer check to see if your key fob has been matched to your engine immobilizer. Car key batteries typically last for around three to four years. So, if you’re noticing that your battery is either dying, or completely dead, it’s time to start thinking about a replacement. Our range of replacement car key batteries at Halfords covers all of the common car brands you’re likely to. Dec 22, 2017 This tutorial explains how to replace the key fob battery in Audi A3 8P, 8V (2003 – 2018), Audi A4 B7 (2004 – 2009), Audi A6 C6 (2004 – 2011), Audi Q3 8U (2011 – 2018), Audi Q7 1st. 1-48 of over 1,000 results for 'audi key fob battery' Price and other details may vary based on size and color Key Fob Keyless Entry Remote fits Audi A1 A3 A4 A5 A6 A7 A8 Allroad Q3 Q5 Q7 S3 S4 S5 S6 S7 S8 SQ5 RS5 RS7 (IYZFBSB802).

How to start your car when the remote battery is dead and your car only has a keyless ignition.


Some day, you’re going to be in a situation where your car won’t detect your key fob, either prohibiting you from locking/unlocking the doors or using the push-start button. When that happens — after you’ve cursed “newfangled” technology that just complicates everything — here are some potential reasons why the car won’t detect the key fob and solutions to fix it.

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Reasons your car won’t detect the key fob

If you try to use the push-button start, but the dashboard message appears that a key is not detected, it could be that

  • the battery inside the remote is dead.
  • the remote itself is broken or no longer programmed to your car.
  • the car battery is low.
  • the keyless operation system is faulty.

Solutions to start the engine

If your car doesn’t detect the key fob, the easiest solution is to use the physical backup key instead. Some cars can use either method to unlock the doors and start the engine. Unfortunately, most cars with push-button start don’t use a physical key to start the ignition, so you may be stranded somewhere without a way to get the car running.


Try any or all of these solutions to start your car:

  • Check the owner’s manual to see if the automaker installed a backup solution for starting the car if the key dies.
  • Look for a hidden slot near the steering column that might not be obvious at first.
  • Press the start button with the key itself. Some cars can still detect dead key fobs this way in emergencies.
  • If it’s a cold day, go indoors and warm up the key fob with your breath. Sometimes, the temperature can mess with the electronics.
  • If you have a second key fob, try using it. This should at least show you if the problem is the key or the car.
  • Replace the battery in the key fob with a new one (use a coin or screwdriver to pop it open).

Audi Key Fob Battery Size


If all else fails, you can have your car towed to a service center that specializes in your car’s brand so they can diagnose the problem and potentially program a new key fob.

Audi Key Battery Size

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Audi key fob battery type

Sources: AA1Car, Lifewire

Aaron is unashamed to be a native Clevelander and the proud driver of a Hyundai Veloster Turbo (which recently replaced his 1995 Saturn SC-2). He gleefully utilizes his background in theater, literature, and communication to dramatically recite his own articles to nearby youth. Mr. Widmar happily resides in Dayton, Ohio with his magnificent wife, Vicki, but is often on the road with her exploring new destinations. Aaron has high aspirations for his writing career but often gets distracted pondering the profound nature of the human condition and forgets what he was writing… See more articles by Aaron.