Buying a replacement car key online: what to check first

Check what the listing includes

A case, shell or uncut blade is different from a complete electronic key. Some vehicles need a coded transponder or smart-key functions to start. A blade that fits the lock may not be enough. Ask the provider for the correct part specification before ordering.

Get three answers from the provider

Will you accept and program this exact part? Give the provider the seller's part number and relevant product description through its own enquiry channel. Confirm support for your particular year and key system.

What will I pay if it cannot be programmed? Ask about programming, cutting, attendance, testing and any fee still payable if the part turns out to be incompatible.

What warranty and return terms apply? Clarify the seller's terms for the part and the provider's terms for its own work before paying. Don't assume they are the same.

Compare the complete costs

The online part price alone is not the finished replacement cost. If a provider offers both options, compare the price of your part plus cutting, programming, testing, attendance and GST with a quote for a compatible key that the provider supplies and programs. Include any fee you would owe if your own part cannot be registered. A cheaper listed part is not necessarily a cheaper working key.

Before replacing a faulty remote

A remote that stops responding may have a battery or another fault rather than a failed programmable key. Check model-specific owner guidance or get a suitable assessment first. Car-key programming charges explained explains programming work.

A message to send before buying