You would need to have a suitable [link|https://www.ebay.com.au/itm/394156809390?hash=item5bc5939cae:g:7R8AAOSwfMxiyUO6&amdata=enc%3AAQAHAAAA0LpGxUTdyThFLWcRXQPpuSpGwjz0GUyctQ3aDC5pSBuo%2FzlQ4CWn8GhJj6Eaep8DvfCO%2BhCOpDlDnl6WFlVVj2w40jnweM%2BQbOI7T96rAAA7mkUXlDycFSI2bsZOtHJu6ku3MUALXvQVHhDTsLPjCMW7%2BtUQF9aC%2FTZW9DDRO9sfjyckdoZxJnF36Uk8vMDQgpI0ZU6Og%2FxwLxv71wuG%2BdN%2FEkzuUU4lidscPInc6p05R6llKeYj4i%2BL7j%2B4ZISgXtnD%2BLpJxgFMxGj%2FXUH%2FN80%3D%7Ctkp%3ABFBM3vrst4Bh|signal test meter] (example only) to detect if any signal was being sent from the key fob when the button was pushed.
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You would need to have a suitable [link|https://www.ebay.com.au/itm/394156809390?hash=item5bc5939cae:g:7R8AAOSwfMxiyUO6&amdata=enc%3AAQAHAAAA0LpGxUTdyThFLWcRXQPpuSpGwjz0GUyctQ3aDC5pSBuo%2FzlQ4CWn8GhJj6Eaep8DvfCO%2BhCOpDlDnl6WFlVVj2w40jnweM%2BQbOI7T96rAAA7mkUXlDycFSI2bsZOtHJu6ku3MUALXvQVHhDTsLPjCMW7%2BtUQF9aC%2FTZW9DDRO9sfjyckdoZxJnF36Uk8vMDQgpI0ZU6Og%2FxwLxv71wuG%2BdN%2FEkzuUU4lidscPInc6p05R6llKeYj4i%2BL7j%2B4ZISgXtnD%2BLpJxgFMxGj%2FXUH%2FN80%3D%7Ctkp%3ABFBM3vrst4Bh|signal test meter] (example only) or an oscilloscope to detect if any signal was being sent from the key fob when the button was pushed.
Looking online it seems that in the USA and Japan, most vehicle key fobs operate on a frequency of 315MHz and in Europe it is 433.92MHz.
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Here's a [https://web.stanford.edu/class/ee26n/Assignments/Assignment5.html|link] that explains how key fobs work.
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Here's a [link|https://web.stanford.edu/class/ee26n/Assignments/Assignment5.html|link] that explains how key fobs work.
You would need to have a suitable [https://www.ebay.com.au/itm/394156809390?hash=item5bc5939cae:g:7R8AAOSwfMxiyUO6&amdata=enc%3AAQAHAAAA0LpGxUTdyThFLWcRXQPpuSpGwjz0GUyctQ3aDC5pSBuo%2FzlQ4CWn8GhJj6Eaep8DvfCO%2BhCOpDlDnl6WFlVVj2w40jnweM%2BQbOI7T96rAAA7mkUXlDycFSI2bsZOtHJu6ku3MUALXvQVHhDTsLPjCMW7%2BtUQF9aC%2FTZW9DDRO9sfjyckdoZxJnF36Uk8vMDQgpI0ZU6Og%2FxwLxv71wuG%2BdN%2FEkzuUU4lidscPInc6p05R6llKeYj4i%2BL7j%2B4ZISgXtnD%2BLpJxgFMxGj%2FXUH%2FN80%3D%7Ctkp%3ABFBM3vrst4Bh|signal test meter] (example only) to detect if any signal was being sent from the key fob when the button was pushed.
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You would need to have a suitable [link|https://www.ebay.com.au/itm/394156809390?hash=item5bc5939cae:g:7R8AAOSwfMxiyUO6&amdata=enc%3AAQAHAAAA0LpGxUTdyThFLWcRXQPpuSpGwjz0GUyctQ3aDC5pSBuo%2FzlQ4CWn8GhJj6Eaep8DvfCO%2BhCOpDlDnl6WFlVVj2w40jnweM%2BQbOI7T96rAAA7mkUXlDycFSI2bsZOtHJu6ku3MUALXvQVHhDTsLPjCMW7%2BtUQF9aC%2FTZW9DDRO9sfjyckdoZxJnF36Uk8vMDQgpI0ZU6Og%2FxwLxv71wuG%2BdN%2FEkzuUU4lidscPInc6p05R6llKeYj4i%2BL7j%2B4ZISgXtnD%2BLpJxgFMxGj%2FXUH%2FN80%3D%7Ctkp%3ABFBM3vrst4Bh|signal test meter] (example only) to detect if any signal was being sent from the key fob when the button was pushed.
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Looking online it seems that in the USA and Japan, most vehicle key fobs operate on a frequency of 315MHz and in Europe it is 433.92MHz
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Looking online it seems that in the USA and Japan, most vehicle key fobs operate on a frequency of 315MHz and in Europe it is 433.92MHz.
+
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Here's a [https://web.stanford.edu/class/ee26n/Assignments/Assignment5.html|link] that explains how key fobs work.
Hi @joetuff
You would need to have a suitable [https://www.ebay.com.au/itm/394156809390?hash=item5bc5939cae:g:7R8AAOSwfMxiyUO6&amdata=enc%3AAQAHAAAA0LpGxUTdyThFLWcRXQPpuSpGwjz0GUyctQ3aDC5pSBuo%2FzlQ4CWn8GhJj6Eaep8DvfCO%2BhCOpDlDnl6WFlVVj2w40jnweM%2BQbOI7T96rAAA7mkUXlDycFSI2bsZOtHJu6ku3MUALXvQVHhDTsLPjCMW7%2BtUQF9aC%2FTZW9DDRO9sfjyckdoZxJnF36Uk8vMDQgpI0ZU6Og%2FxwLxv71wuG%2BdN%2FEkzuUU4lidscPInc6p05R6llKeYj4i%2BL7j%2B4ZISgXtnD%2BLpJxgFMxGj%2FXUH%2FN80%3D%7Ctkp%3ABFBM3vrst4Bh|signal test meter] (example only) to detect if any signal was being sent from the key fob when the button was pushed.
Looking online it seems that in the USA and Japan, most vehicle key fobs operate on a frequency of 315MHz and in Europe it is 433.92MHz