Check the clutch switch too. Above the pedals under the dash.
All the above are good suggestions - could also be the starter itself. Over the years on various cars I've replaced an ignition switch, clutch switch, and a couple of starters.
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Jeff S
'14 991.1 Carrera S Coupe
'25 Cayenne E-Hybrid
'11 997.2 Carrera S Cab
'09 987.2 Cayman S
'05.5 Audi S4
'25 GMC Yukon XL
'17 718 Boxster
'18 718 Cayman x 2
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