Honda Sh125 2021 Won't start

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Mattt
Posts: 607
Joined: Mon Feb 15, 2010 9:53 pm
Rides:: Honda c90c Chaly CF70 Yamaha YDS5 Honda CB400n superdream
Location: Surrey

Honda Sh125 2021 Won't start

Post by Mattt » Mon Mar 27, 2023 6:36 pm

Bought a accident damaged 2021 sh125 ,not the mode model,it has keyless ignition and a built in alarm
The keyless system seems to work and the blue light comes on and the ring unlocks ,the yellow key flashes on the dash a few times.
The bike does run with easy start, the fuel.pump primes and goes.off but bike won't start
It did run briefly once but just cranks and won't fire
Can't seem to stop both indicators flashing ,the siren also goes off ,the smart key only seems to unlock the bike amd doesn't disarm the alarm
Not sure if it's a fault or just me

125erCrazy
Posts: 1626
Joined: Sat Nov 16, 2013 2:19 pm
Rides:: C125 Super Cub/Address 110
Location: Essex/Suffolk border

Re: Honda Sh125 2021 Won't start

Post by 125erCrazy » Mon Mar 27, 2023 7:13 pm

Tip over sensor or reset code for alarm/fob?

Mattt
Posts: 607
Joined: Mon Feb 15, 2010 9:53 pm
Rides:: Honda c90c Chaly CF70 Yamaha YDS5 Honda CB400n superdream
Location: Surrey

Re: Honda Sh125 2021 Won't start

Post by Mattt » Mon Mar 27, 2023 10:10 pm

If the tip sensor is triggered wouldn't the keyless unlock stop the hazards and siren ?

125erCrazy
Posts: 1626
Joined: Sat Nov 16, 2013 2:19 pm
Rides:: C125 Super Cub/Address 110
Location: Essex/Suffolk border

Re: Honda Sh125 2021 Won't start

Post by 125erCrazy » Tue Mar 28, 2023 8:25 am

In theory yes but with these electronic igntions I dont really know & one of the many reasons I dislike keyless I was just thinking the systems brain would see any break in communication as a theft attempt :?:

I would imagine you'll need the manual input code to reset the system (ive never even read the owners manual for working keyless tbh)

As an aside have you put a new battery in the fob just in case (I know T max owners are having issues)

I'm sure somebody clever on here will know

slowboy
Posts: 487
Joined: Fri Nov 02, 2012 9:48 pm
Rides:: Honda Super Cub 125
Location: Kingsbridge Devon

Re: Honda Sh125 2021 Won't start

Post by slowboy » Tue Mar 28, 2023 8:55 am

125erCrazy wrote:
Tue Mar 28, 2023 8:25 am
In theory yes but with these electronic igntions I dont really know & one of the many reasons I dislike keyless I was just thinking the systems brain would see any break in communication as a theft attempt :?:

I would imagine you'll need the manual input code to reset the system (ive never even read the owners manual for working keyless tbh)

As an aside have you put a new battery in the fob just in case (I know T max owners are having issues)

I'm sure somebody clever on here will know
You’ll need the proper workshop manual to get the right sequence to reset the keyless stuff. I have the proper manual for my Super Cub and the set up instructions are in there. I assume the SH will be similar.
If you can’t get a manual (mine came from the USA) you can pay Honda to access the online version. I wonder yours has been fiddled with in an attempt to steal it. There is a possibility you’ll need to replace the keyless system if it’s been over ridden to steal it.

Mattt
Posts: 607
Joined: Mon Feb 15, 2010 9:53 pm
Rides:: Honda c90c Chaly CF70 Yamaha YDS5 Honda CB400n superdream
Location: Surrey

Re: Honda Sh125 2021 Won't start

Post by Mattt » Tue Mar 28, 2023 9:11 am

it was accident damaged bought off the original owner , the fuel was drained and replaced as it was 1 year old
It did run briefly and cut out before we changed the fuel .
I have left the battery off overnight , the keyfob battery is ok , not replaced though
I will leave it once the battery is connected and see if the hazards still flash

thanks for all the replies and tips
Cheers
Matt

125erCrazy
Posts: 1626
Joined: Sat Nov 16, 2013 2:19 pm
Rides:: C125 Super Cub/Address 110
Location: Essex/Suffolk border

Re: Honda Sh125 2021 Won't start

Post by 125erCrazy » Tue Mar 28, 2023 10:28 am

Matt
I look forward to an update as Im not looking forward to my Supercub start up after 6 months hibernation

Mattt
Posts: 607
Joined: Mon Feb 15, 2010 9:53 pm
Rides:: Honda c90c Chaly CF70 Yamaha YDS5 Honda CB400n superdream
Location: Surrey

Re: Honda Sh125 2021 Won't start

Post by Mattt » Sat Apr 01, 2023 10:26 pm

Well found a siren in the box of broken parts and a module taped into the loom
Turns out he has had a alarm and tracker both wired into the bike ,spoke to the owner and picked up the missing alarm fob! ,tracker was never setup and paid subscription started
Switched off the alarm ,and it runs fine !

125erCrazy
Posts: 1626
Joined: Sat Nov 16, 2013 2:19 pm
Rides:: C125 Super Cub/Address 110
Location: Essex/Suffolk border

Re: Honda Sh125 2021 Won't start

Post by 125erCrazy » Sun Apr 02, 2023 2:27 am

Touch

Thanks for the update, happy SH motoring

horobags
Posts: 2211
Joined: Sun Jan 30, 2011 10:48 pm
Rides:: PCX 125, Vision 110
Location: scruffy old mancfester..

Re: Honda Sh125 2021 Won't start

Post by horobags » Sun Apr 02, 2023 2:01 pm

great news.

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