How to Change Porsche Key Battery Replacement
Porsche vehicles rely on battery-powered key fobs and entry remotes to lock, unlock and start the car without needing to insert an actual key. These key fobs are convenient but run on small coin cell CR2032 batteries which eventually need replacing every 1-2 years with regular use. This guide will cover everything needed to safely change the battery in your Porsche key.
Introduction to Porsche Key Fob Battery Replacement
Porsche utilizes remote keyless entry systems on most modern models which consist of a key fob transmitter and electronics inside the vehicle. The key fob is powered by a small, round 3V CR2032 lithium coin cell battery. This battery type typically lasts about 1-2 years with regular daily usage before needing replacement.
It’s important to promptly replace the battery once it begins getting low. A dead battery in the key fob will prevent you from being able to lock/unlock the doors or start the engine remotely. In some cases, the vehicle may not even start when the battery gets critically low. Replacing the key fob battery yearly can prevent headaches from dealing with a dead key.
Signs Your Porsche Key Battery Needs Replacement
There are a few signs that indicate the battery in your Porsche key fob is running down and due for a replacement:
- Reduced remote range – The doors won’t lock/unlock unless you’re very close to the car
- Key no longer starting engine – Pressing the remote start button has no effect
- Warning light on dashboard indicating low key fob battery
If you experience any of those issues, it’s definitely time to swap in a new CR2032 battery. Porsche key batteries can be purchased affordably in multipacks and changed in just a few minutes.
Materials Needed to Change Porsche Key Battery
Gather the following tools and supplies before getting started:
- New CR2032 3V lithium coin cell replacement battery (or equivalent)
- Small Phillips head screwdriver
- Clean microfiber cloth
- Silicone grease (optional to apply on battery contacts)
Safety Steps Before Changing Porsche Key Battery
Take these safety precautions when working on the vehicle key fob:
- Ensure the vehicle is switched fully OFF and the key is out of ignition
- Be aware of the locations of any electronic vehicle sensors in door handles/trunk area
- Avoid touching any circuit board components inside the fob casing
Carefully Removing the Old Porsche Key Battery
Follow these steps to take out the depleted battery in the Porsche key fob:
- Use a Philips head screwdriver to gently pry open the plastic key fob casing
- Locate the circular CR2032 battery and carefully slide it out using the microfiber cloth
- Wipe the positive/negative battery contacts completely clean with the cloth
- Optional: Apply a small dab of silicone grease on the contacts
Installing New Battery in Porsche Car Key
To insert the replacement 3V coin cell battery:
- Hold the new CR2032 battery with microfiber cloth oriented + side up
- Align correct +/- polarity before placing in casing
- Avoid bending or damaging the thin metal contacts
- Carefully snap the key fob casing back together
Porsche Key Resynchronization After Battery Change
Once the fresh battery is installed, the vehicle may need to resynchronize with the key:
- Press the key fob unlock button near front driver door handle
- Open driver door and insert full key in the ignition
- Turn ignition to ON position for a few seconds, then back OFF
- Test operation of lock/unlock buttons and remote engine start
If the newly replaced key fob battery still doesn’t operate the car, reference the owner’s manual on how to re-pair the key.
Additional Porsche Key Battery Tips
Consider these extra pointers when changing Porsche key fob batteries:
- Buy a few additional new CR2032 batteries to store for future use
- Plan on replacing all your vehicle’s key fob units at the same time
- Properly dispose old lithium batteries at collection sites
Changing the small battery inside Porsche keys is quick and inexpensive maintenance to keep your vehicle’s convenience features running smoothly. Follow the steps outlined and avoid getting stuck with a dead key fob!
Frequently Asked Questions About Changing Porsche Key Batteries
What type of battery does my Porsche key fob use? Most Porsches use a standard CR2032 lithium coin cell battery. Some models with more advanced keyless functions may use a CR2450 battery instead. Always check your owner’s manual.
How often should I replace my Porsche key fob battery? About once yearly is a good interval if you use the keyless functions daily. The battery can last up to 2 years if used more occasionally.
Can I change the battery myself or do I need a dealership?
Replacing the battery is a quick, straightforward DIY fix if you have the right small pry tool, microfiber cloth and a new battery. No need for the dealership!
What if replacing the battery doesn’t fix my key fob? In rare cases there may be an underlying electronic issue with the key, requiring repair or replacement. Try re-syncing first before assuming additional issues.
How can I maximize my new Porsche key fob battery life? Minimize pressing buttons when distant from vehicle, store key in cool dry location when not in use, and consider turning down the brightness of any battery indicator lights.