Clock running slow

Frank8 · Feb 20, 2019

Since new, the clock on my 2016 always seemed to lose time, maybe a minute every few months. Then began slowing down faster a few months ago. About a minute every two weeks or so. Rate of slowing increasing, now it’s a minute every 3 days.

The last time I reset it it switched to zulu time by itself. Was able to switch back to 12 hr time with no problem.

I have à voltmeter in one of the power plugs and voltage seems ok. Reads 14 volts when I’m driving.

Is the clock trying to tell me something other than incorrect time?

Azoo · Feb 20, 2019

Its trying to tell you that its very cold. Electronics act weird when the temp is below 0. See if things change when the weather warms up.

BrandonM7 · Feb 20, 2019

It's telling you that you're about to need to replace your battery. Every time our rovers start losing time and resetting to 24hr/dd-mm-yyyy there's a no-start within a few weeks. Reading 14V when driving backs that up -- the charging system is smart and only charges the bare minimum, usually reads 12-13 with a good battery when driving. That's part of the reason that these things eat batteries so quickly. If it's reading constant 14+ it's possibly trying to pump up a battery that doesn't want to hold it.

PaulLR3 · Feb 21, 2019

BrandonM7 said:
It's telling you that you're about to need to replace your battery. Every time our rovers start losing time and resetting to 24hr/dd-mm-yyyy there's a no-start within a few weeks. Reading 14V when driving backs that up -- the charging system is smart and only charges the bare minimum, usually reads 12-13 with a good battery when driving. That's part of the reason that these things eat batteries so quickly. If it's reading constant 14+ it's possibly trying to pump up a battery that doesn't want to hold it.

Exactly. Every time my clock changed to military time by itself, the battery died a week or two later.

ktm525 · Feb 22, 2019

That is a no cost option!

Frank8 · Feb 22, 2019

Oh, crap! Even tho I’m still under warranty it’s a 1 1/2 hr drive to a wretched dealer. It’s another 40 minutes to the next one.

My “resting” voltage is 12.2-12.3. When I start, it drops to 11 but within a second it’s up to 12.5.

I’ve only made very local trips recently and it’s been bloody cold and I’m sure the battery never got much above ambient. But the voltmeter reads 14.8 when I drive.

How are batteries tested?

I could have it done locally. Probably would in any event because I don’t trust that dealer.

Thank you for your replies. Much appreciated.

ryanjl · Feb 22, 2019

As far as I know, dealers replace the original battery with an Interstate battery, so it's not like going to a dealer gets you any sort of advantage, unless you are still under the original warranty.

Just go anywhere and get a good battery. Interstate, Exide, Odyssey, etc. You can go with a Group 49 if you want a bigger battery.

Frank8 · Feb 22, 2019

Thank you.
Yes, I’m still under original warranty but I’m debating whether it’s worth the couple hundred bucks to spend a day and dealing with a really awful dealer.

But, out of curiosity, how are batteries tested?

ktm525 · Feb 23, 2019

That's weird interstate used to recommend the MTP-49 H8 as standard replacement and now they seem to recommend a MTP-94R H7? I prefer the 49 for the longer reserve capacity.

If going Interstate you want MTX-49 H8 AGM

SantaAna7 · Feb 25, 2019

BrandonM7 said:
It's telling you that you're about to need to replace your battery. Every time our rovers start losing time and resetting to 24hr/dd-mm-yyyy there's a no-start within a few weeks. Reading 14V when driving backs that up -- the charging system is smart and only charges the bare minimum, usually reads 12-13 with a good battery when driving. That's part of the reason that these things eat batteries so quickly. If it's reading constant 14+ it's possibly trying to pump up a battery that doesn't want to hold it.

I thought I read that the system applies different charging levels to AGM and lead acid batteries and the 14v was the normal for AGM.

Clock running slow

Frank8

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