For the record, I'm not gonna pull the switchero with the Fronty. My reply to that suggestion was tongue in cheek (or however that saying goes).
If you mean I shouldn't even ASK if they'll cover it, I don't agree with you. I doesn't hurt to ask. If they don't cover it, I'll move on to plan B (most likley try to clean it or find a 3rd party replacement myself). If they make this little concession, they'll have a loyal customer for life. If they don't, I might be inclined take a look at Toyota along with Nissan next time I need vehicle. No biggy - free market/customer service, that's all!.

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Thanks for the clarification. My apologies for disparaging your character. Working within the system, you should ask, you should be assertive, and you should go to Nissan. Who would take exception to that? Good luck.