I have peaceful relationships with my parents, but not really close. We're all feelers and dislike conflict. There's a high degree of harmony. On the surface, anyway. I think most opinions or beliefs that would lead to conflict are reserved and eventually evaporate. Someone accepts something and poof goes the potential conflict. Which may or may not be good, depending on the thing being accepted.
I'm a little closer with my mom. She's an INFP with a beautiful imagination and her writing is inspiring. Very fluid, colorful and meaningful. I admire her and when a friendship or relationship doesn't work out I lean on her a little emotionally. I appreciate her and support her in return when I can. But even then we're not really that close. She's reliable in that her ideals and beliefs don't fluctuate much and she follows what she feels confidently and consistently.
I've always felt a little distant from my dad. He's an ESFJ. He's very reliable in some ways (his sense of right and wrong mainly), but not so reliable in others. I have a habit of questioning things (mainly myself). As a strong sensor I feel he mainly accepts things as they are without questioning them much, unless there's a direct conflict with his sense of right and wrong. He mainly adapts. I value shaping my own ideals and beliefs, even if they're not the best for me socially or financially, etc. But he changes when it benefits him in those ways. Now, he doesn't change so much that he's not himself or anything, but I think for him there's a lot of space for abandoning ideals, beliefs or perspectives and adopting more beneficial or helpful ones (for a specific situation or person). Which is a good trait in many ways, but it's not something I fully approve of as it's simply not what I believe is right. That being said, I still respect him. We're just very different in how we interact with others and society in general. So in that way he's unreliable. Inconsistent or even adaptable might be more accurate though. Either way, I'm a little hesitant to trust him completely.