adjusting the clock constantly?

The Fixer

Well-Known Member
First Name
Steve
Joined
Aug 7, 2019
Messages
408
Reaction score
354
Location
North Jersey
Vehicle(s)
2018 Mojito! JLS, 2018 Firecracker JLUSS
Build Thread
Link
Occupation
Teacher

donmontalvo

Well-Known Member
First Name
Don
Joined
Dec 2, 2019
Messages
476
Reaction score
377
Location
Devon, PA
Website
donmontalvo.com
Vehicle(s)
2021 Jeep Wrangler Unlimited Rubicon (Snazzberry)
Build Thread
Link
Occupation
Systems Engineer
Vehicle Showcase
1

rallydefault

Well-Known Member
Joined
Mar 17, 2018
Messages
1,030
Reaction score
1,190
Location
PA
Vehicle(s)
'18 JLU Sport S
Mine does that, too. I have the small radio in the Sport.
 

Dash68

Well-Known Member
First Name
Skip
Joined
Feb 15, 2020
Messages
147
Reaction score
169
Location
Lake Ann, Michigan
Vehicle(s)
2012 JKUR, 2017 GC Trailhawk
It's not a jeep issue, it's a digital clock issue... All digital clocks have the issue (some drift more, some drift less, but they all drift). Don't blame jeep for a technology limitation. There is a reason the atomic time clocks are a big deal, and there's a reason they broadcast time signals. Sadly, they tried to keep the base headunit barebones.
Out of all of the vehicles I've owned that had digital clocks, all have been spot on with no noticable loss of time. Only my '12 JK Wrangler looses time.
 
OP
OP

DMortensen1

Member
Joined
Feb 4, 2019
Messages
8
Reaction score
1
Location
Utah
Vehicle(s)
2018 Wrangler Unlimited Sport
Well at least I know that I’m not the only one. Frustrating that Jeep hasn’t bothered to fix it.
 

Strommen95

Well-Known Member
Joined
Feb 5, 2019
Messages
998
Reaction score
2,193
Location
New York
Vehicle(s)
2019 Mojito Sport S JLU
5' radio loses time every week. The UConnect in my JK never lost time.
 

jludave

Well-Known Member
First Name
David
Joined
Feb 13, 2020
Messages
2,128
Reaction score
1,840
Location
The Isle of Long
Vehicle(s)
2020 Wrangler Unlimited Sport Altitude
Vehicle Showcase
1
I haven't looked, but does the 5" radio have the SAT antenna connector?
It does if you have SiriusXM. However, the 5 inch radio has no provision to pull time from it. The other Uconnect radios can sync time from GPS, not satellite.
 

NBB

Well-Known Member
Joined
Mar 10, 2019
Messages
137
Reaction score
135
Location
Boulder
Vehicle(s)
21 JLUR
Out of all of the vehicles I've owned that had digital clocks, all have been spot on with no noticable loss of time. Only my '12 JK Wrangler looses time.
Most processor electronics are clocked by a crystal oscillator. They’re a graded part, sold by “parts per million” of cycles lost or gained over something perfect, over some temperature range. Cost differences are small, so I agree it’s petty and annoying to lose more than a minute every 6 months when you have to change clocks anyway. If you were savy and interested, you could likely swap the part.
 

INCRHULK

Well-Known Member
First Name
Lance
Joined
Jul 23, 2019
Messages
646
Reaction score
588
Location
Canada
Website
litwphoto.com
Vehicle(s)
2019 Wrangler Unlimited Sahara
Build Thread
Link
Occupation
Team Lead, Information Technology
It seems like every few months I have to readjust my clock because it loses a few minutes. Does anyone else have this problem and is there a fix?
Set it to sync time via the GPS signal. Set and done, it will even auto-update based on time zones.
 

INCRHULK

Well-Known Member
First Name
Lance
Joined
Jul 23, 2019
Messages
646
Reaction score
588
Location
Canada
Website
litwphoto.com
Vehicle(s)
2019 Wrangler Unlimited Sahara
Build Thread
Link
Occupation
Team Lead, Information Technology
The JK's have the same issue. I'm surprised Jeep didn't figure out a fix for the JL's.
There isn't really a "fix". Crystal oscillators have some drift, even though they are widely more accurate than mechanical timepieces. If you're old enough, you likely remember the advent of "quartz movement" watches, and digital watches. Less expensive, and supremely more accurate than anything but the most expensive mechanical movments.

That being said, voltage fluctuations can affect the accuracy as well. Car stereos just happen to be one of those almost worse case scenarios. Set it to sync via GPS, and you're set.
 

donmontalvo

Well-Known Member
First Name
Don
Joined
Dec 2, 2019
Messages
476
Reaction score
377
Location
Devon, PA
Website
donmontalvo.com
Vehicle(s)
2021 Jeep Wrangler Unlimited Rubicon (Snazzberry)
Build Thread
Link
Occupation
Systems Engineer
Vehicle Showcase
1
There isn't really a "fix". Crystal oscillators have some drift, even though they are widely more accurate than mechanical timepieces. If you're old enough, you likely remember the advent of "quartz movement" watches, and digital watches. Less expensive, and supremely more accurate than anything but the most expensive mechanical movments.

That being said, voltage fluctuations can affect the accuracy as well. Car stereos just happen to be one of those almost worse case scenarios. Set it to sync via GPS, and you're set.
I read there was a Jeep "fix" for the drifting clock, found the URL:

https://www.jlwranglerforums.com/fo...the-clock-not-keeping-time.12745/#post-309267

If your head unit supports the SiriuxXM antenna, it fixed the problem for me, clock no longer drifts, and I now have the compas working.
 

5foot19

Well-Known Member
Joined
Sep 29, 2020
Messages
88
Reaction score
114
Location
Canada
Vehicle(s)
2020 JLUR
Out of all of the vehicles I've owned that had digital clocks, all have been spot on with no noticable loss of time. Only my '12 JK Wrangler looses time.
Lol, I'm going to have to call shenanigans on that. There is effectivly an entire industry in place to mitigate the technological limitations that cause clocks to drift, and to provide accurate/consistent time where 1 second is exactly 1 second, and I can guarantee you, your cars do not have the technology required to do it. No car does. Maybe your cars didn't drift as much or as fast as the JL (thats entirely possible, and not far fetched in the least), but I can assure you, every single consumer grade digital clock drifts. Its only a matter of how fast/slow) its a technological limitation. The 8.4 head units, people will argue don't drift, but they do... However instead of using the internal clock, you can set it to regularly synchronize the time it displays with the time it receives from the GPS satellites (which wont drift), leaving people to mistakenly state or claim they don't drift when in reality, they are getting their time corrected multiple times a day, so they appear to never drift. remove the GPS satellites, and the 8.4 inch headunits will drift like the others.

The more expensive digital watches (think $800+) have switched to being synchronized off the atomic clock, either via GPS signals or using other over the air technology, because even an 800$ watch will drift without being synchronized regularly.

The most expensive iphone 47 or whatever they are up to now, drifts too, and will receive time synchronization signals from your cell carrier.

Servers, and computers, that run banking institutes, wall street, DoD, NSA, you name it, where exact time in is critical, ALL drift. To combat that, they implement technology called an NTP server. That server receives time synchronization signals (over the air for example, similar to receiving your time from a GPS signal), because yes, even the fanciest, most expensive servers, drift and cannot keep exact times....

All that varies is how much/how fast. If you are fortunate and a high quality crystal is used, its maybe a minute a year. If you are unfortunate its a lot more.
 
Last edited:

jludave

Well-Known Member
First Name
David
Joined
Feb 13, 2020
Messages
2,128
Reaction score
1,840
Location
The Isle of Long
Vehicle(s)
2020 Wrangler Unlimited Sport Altitude
Vehicle Showcase
1

RoadiJeff

Well-Known Member
Joined
May 24, 2020
Messages
385
Reaction score
479
Location
St. Louis
Vehicle(s)
2020 2.0T Recon, 2018 3.6L GC High Altitude
The more expensive digital watches (think $800+) have switched to being synchronized off the atomic clock, either via GPS signals or using other over the air technology, because even an 800$ watch will drift without being synchronized regularly.
Heck, even a cheap $30 Casio has atomic timekeeping nowadays on some of their models.
 

The Last Cowboy

Well-Known Member
First Name
Joe
Joined
Jul 2, 2020
Messages
1,610
Reaction score
2,747
Location
San Antonio, TX
Vehicle(s)
2020 JL Willys 2 door
Occupation
Wandering Vaquero
My base radio loses about 2-3 minutes a month. My mechanical watch is more accurate.
 
Advertisement

ATO4x4
 
Advertisement
Top