How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dan Your Own Question
Dan, Technician
Category: Industrial Equipment
Satisfied Customers: 4735
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Type Your Industrial Equipment Question Here...
Dan is online now
A new question is answered every 9 seconds

JLG 3246E2, Serial # 0200059244 Once the platform is raised

Customer Question

JLG 3246E2, Serial #(###) ###-####
Once the platform is raised above approximately 12' above the ground, the unit will not drive.
We have to lower it to move it.
Any thoughts ?
Submitted: 9 months ago.
Category: Industrial Equipment
Expert:  Dan replied 9 months ago.

Hi Mike, My name is***** will be glad to try to help. Check your limit switches and harness for problems. also I believe this model also has the pothole switches as well that can cause a problem with drive function. Bare with me while I pull up the manuals

Customer: replied 9 months ago.
No problem, I appreciate the help
Customer: replied 9 months ago.
If it is easier I can get in front of the machine it's just a couple Doors Down
Expert:  Dan replied 9 months ago.

Are you getting any fault codes and do you have access to the JLG analyzer?

Customer: replied 9 months ago.
I wouldn't know where to look for fault codes and I do not have an analyzer
Expert:  Dan replied 9 months ago.

Click on the service book and see pdf page 49. It explains the limit switches and there are adjustment as well

Expert:  Dan replied 9 months ago.

PDF page 59 shows your flash codes in the service book which I believe the procedure is in the operators manual to pull the codes on this model from the controller without using the analyzer.

Expert:  Dan replied 9 months ago.

PDF 72 is your schematics

Expert:  Dan replied 9 months ago.


When the machine is raised, and a door is opened,

the machine will not drive.

Customer: replied 9 months ago.
Is it 2-49 ? In the service manual ?
Expert:  Dan replied 9 months ago.


The machine is equipped with a Pothole Protection

System which lowers automatically when the plat-

form is raised. The Pothole Protection System will

also lower when either of the doors are opened, but

only on the side of the opened door and this will not

provide tip over protection. If the Pothole Protection

System does not fully lower, the DRIVE function is

cut out until the platform is completely lowered.

Expert:  Dan replied 9 months ago.

2-45 is the same as PDF page listed at the top of the page as 59

Customer: replied 9 months ago.
Well, I appreciate your help, but I think it would be better if I took it to a repair shop
Expert:  Dan replied 9 months ago.

You would need a digital volt Ohm meter to test the switches and harness and also the JLG analyzer is much faster at being able to check the circuits and their operation.

Expert:  Dan replied 9 months ago.

I understand. Let me know if I can be of more help.

Customer: replied 9 months ago.
Expert:  Dan replied 9 months ago.

The pothole protection is supposed to disable drive with the platform raised if it is working properly. Pleasure to help