Crooza DBX-6788, Manual

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Troubleshooting 

Problem

Possible Cause

Solution

No sound, no light, the 
vehicle doesn’t move 

1.  Cable connections are loose. 

2.  Check the fuse.  

3.  Main switch is not on ‘‘I’’.  

Check the cable connections. Ensure 
that the batteries are in their place 
under the steering wheel. Change the 
fuse. Turn the main switch to ‘‘I’’. 

Although the motor 
works, the vehicle 
doesn’t move 

1.  Check if the rear wheels turn as well.  
2.  Loose motor connection 
3. Defected 

gearbox 

Ensure that the the rear wheels touch 
the ground. Remove the gearbox and 
tighten the screws. Change the 
gearbox. 

Motor doesn’t work 

1.  Loose cable 

2. Fuse 

3.  No contact with the gas pedal. 

Check if the cable connections are 
correct. 

Change the fuse. 

Change the foot switch 

Forward motion is OK, 
backward motion 
doesn’t function or 
backward motion is 
OK, forward motion 
doesn’t function  

1.  Check the Forward/Backward switch with 

a circuit analyzer 

Check if the cable connected to the 
switch is placed correctly.  

Change the Forward/Backward switch. 

Speed is very low 

1.  Check if the batteries supply more or less 

than 6V. 

2.  Connect the motor (together with the 

gearbox) directly with the battery and 
check if the speed increases.   

3.  Remove the gearbox and check if it is in a 

good situation. 

Charge the batteries again. 

The reason for speed loss might be the 
condition of the area in which the 
vehicle is operated. 

Change the motor and gearbox. 

Batteries cannot be 
charged 

1.  Check if the output voltage of the charger 

is 6V.  

2.  Plug the charger, remove the connector 

from both sides of the battery and check 
directly the battery if 6±0,1V is supplied. 

3.  Check the connector of the charger and 

the soldering point.  

Change the charger. 

Change the batteries. 

Ensure that the charger is connected 
correctly. 

Check the fuse. 

Remote control 
doesn’t work 

1.  Check if the vehicle is on.  

2.  Turn the switch to ‘‘ON’’ to control 

remotely.  

3.  Ensure that the Control-Display of the 

remote control flashes up. 

Check the places of 0-I switches on the 
vehicle.  

Check the batteries of the remote 
control. 

Check the fuse. 

Change the control unit.  

Replacement parts can be found on Online-Shop on 

www.crooza.de