S70 L5-2.4L VIN 61 B5244S (2000)
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It's not necessary to replace the keys when an immobilizer antenna ring is replaced. The spare part keys can be recognized as below:
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The key for X40 MY03- has the transponder and remote built into the same housing. It is called KIR (Key Integrated Remote).
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The key blade from an X40 MY03- KIR does not need to be replaced if the remote or transponder is faulty.
Method to replace the key blade: