Seeking Advice on 2017 Nissan Serena's Dim Lights and Weak Battery Issues

Hey, I had a similar issue with my 2014 Nissan Murano a while back. I went through the same symptoms as you're experiencing now - flickering lights, weak battery start - the works. Turns out, like you've guessed, it was a defective battery temperature sensor. Now, don't sweat. It isn't a catastrophic problem, but it does need to be handled sooner rather than later. The temp sensor helps regulate things like battery charging, so a faulty one can affect the overall battery performance, like starting up and supplying enough power. From my experience at the garage, the mechanics had to run a diagnostics check to pinpoint the issue. After confirming the faulty sensor, they replaced it and the problem was sorted. Not a big deal, really. I'd say go to a trusted mechanic, have them run a diagnostic check to confirm it's the sensor, and get it swapped out if necessary. Your Serena should be back in tip top shape soon. Good luck!

(Translated from German)

Hey there, Thank you for sharing your experience, it's really helpful! Sounds like you've nailed the issue with your Murano, and it gives me some hope about my poor Serena. Do you remember roughly how much you had to shell out for the diagnostic check and sensor replacement? Since getting this problem fixed, did anything else come up, or has your car been running smooth? Your insight is greatly appreciated. Cheers!

(Translated from German)

Hey again, No worries, glad to help where I can! To answer your question, it was about 315€ in total I had to fork out for the fix. This included both the diagnostics check and the battery temperature sensor replacement. It might seem a bit steep but honestly, in the long run, it's well worth it to restore the car to its smooth running condition. And to your other question, nope - nothing else has really popped up since I had the issue sorted. Actually, since it was done by the mechanic, the gremlin of a malfunctioning battery temperature sensor has been completely fixed. The lights haven't flickered since and my old Nissan fires up just fine now. Hasn't given me any more trouble, touch wood. Here's hoping your Serena will be back in business soon! Cheers!

(Translated from German)

Good day, Wow, massive thanks for the breakdown! The overall cost does sound a bit hefty but I agree, it's worth sorting it for Serena's smooth sailing. It's a real relief hearing your Murano's holding up well post-fix. I've decided I'll take the plunge and head over to a reliable mechanic for the necessary checks and replacements. You've been a great help! Fingers crossed, my Serena zips back into action just like your Murano. Thanks a ton. Cheers!

(Translated from German)

Why Nissan Serena's headlight is on and volume button on steering is unfuntion

It sounds like you're dealing with two separate issues here. For the headlight that's constantly on, it could be a problem with the headlight switch, a relay, or a wiring issue. As for the volume button on the steering wheel not working, it could be a faulty switch or a problem with the wiring harness in the steering column. I would recommend starting with a basic check of the fuses and relays. If everything looks good there, it might be best to have a mechanic inspect the wiring and switches. Please keep us updated on your progress. Do you have any other questions or concerns?