No. Those two are said the same way, but the stress pattern changes for the adjective "accessible."

In general, the pronunciation of "access" as a noun and as a verb is the same. The stress is typically on the first syllable, and it is pronounced /ˈæk.sɛs/ in both cases. However, pronunciation can vary slightly based on regional accents and individual speech patterns. So, whether you're using "access" as a noun or a verb, you can generally pronounce it the same way.