SyncUp & Drive kills batteries/alternator

hjchase1

    I recently added the SyncUP & Drive device to my account - we are long-time T-Mobile customers and have not had any problems whatsoever besides this to date. My son was getting his license and I wanted to be able to monitor his driving. The SyncUP device worked like a charm for the first week or two, until the battery started dying nearly every night. This battery had been replaced less than 6 months prior, so there should not have been an issue. I was going on a trip, so I decided to let him drive my SUV while I was out of town since he was having problems with the battery and I wanted him in a more reliable vehicle. I also have a new battery in my vehicle, about one year old and also had my alternator replaced between 2-3 years ago. Well, when I was on my trip my battery started dying and then after a couple of days my son had the vehicle completely stall on him while driving. This device not only killed my battery, but my alternator! Fortunately, the batteries were both still under warranty but my alternator cost me a pretty penny. These devices sound absolutely amazing for teen drivers but they are most definitely too good to be true!

      All replies

      • tmo_amanda

        Re: SyncUp & Drive kills batteries/alternator

        Hey, hjchase1

         

        Welcome to our Support Community! Gosh, that's not a great first experience for your son especially since he's just getting on the road. It doesn't put your family in a great position either with this happening to two vehicles from the sounds of it. I listed next steps in a different thread you commented on: SyncUp Issues. Please follow those steps to get a ticket filed so our Engineers can figure out why this is happening.

        • magenta6616916

          I also got the sync up Drive and it was put in my vehicle on Monday so it's been less than a week and I noticed the lights flickering on my dashboard in my speedometer needle and RPM needle. I assumed it was the sync up system trying to check my car system, I'm not sure? It didn't happen all the time but periodically while I'm driving and woke up this morning and there's absolutely nothing working on my car no lights absolutely nothing it's the completely dead my battery is less than a year old so now I have to try to tow the vehicle and I attempted to use the synced up roadside assistance after 3 phone calls and two of them being hung up on what they found is that the device doesn't start with the normal numbers and they can't find me in their system either so now I have to figure out how to get my car towed and figure out what's going on with it the device is still attached but it says it's offline. I'm not sure what's going on but I'm not really thrilled. I love the idea of the fact that the device lets me see what's going on with my car but these other problems are less than ideal and couldn't come at a worse time.

          • 732grl

            Re: SyncUp & Drive kills batteries/alternator

            I picked up a SyncUp on 12/21/18 and plugged it into my 2007 Chevy Silverado.  It connected no problem and appeared to be working fine.  Later that day the red battery light stayed on after the truck was started.  Voltage gauge showed the alternator was not charging.  I removed the SyncUp but the problem persisted.  I took the truck home and disconnected the negative battery terminal to reset the OBD2 system.  Two hours later when I started the truck, the red battery light went out and the charging system was working fine.  I repeated the scenario again today with the same result.  For some reason the SyncUp shuts down the charging system of the vehicle.  Obviously I am reluctant to plug it into another vehicle for fear of damage to that vehicle's charging system. 

             

            Perhaps I have a defective unit or is there a problem with the programing of the unit?

             

            Does T-Mobile have any idea of what the problem is ?

            • hippiefrog

              Re: SyncUp & Drive kills batteries/alternator

              Hmm, interesting. My car has been done recently and we've been at a loss for why it's been doing this. I've been having other small issues with the device saying a trip has ended, but it hasn't. I'm unplugging device and calling t mobile tomorrow about it.