Is the train restroom at this end working, or should I try the next carriage?

How to say “Is the train restroom at this end working, or should I try the next carriage?” in Japanese

In Japanese

こっちのトイレって使(つか)えますか？それとも隣(となり)の車両(しゃりょう)に行(い)ったほうがいいですか？

Kocchi no toire tte tsukaemasu ka? Soretomo tonari no sharyō ni itta hō ga ii desu ka?

Is the train restroom at this end working, or should I try the next carriage? in other languages