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GEM Gauge Overview

GEM vehicles that were manufactured in late 2016 and later are equipped with a digital/analog gauge, shown below. The gauge is made up of a speedometer, indicator lamps and Rider Information Center. 

2016 and newer gauge

When driving, the speedometer displays the vehicle's speed in either miles per hour (mph) or kilometers per hour (km/h). See below for how to change from mph to km/h. 

To toggle through mode options, use the MODE button, pictured below.  

Mode button

Here is a look at the indicator lamps found on your GEM: 

Lamp Indicates Condition
vehicle speed indicator Vehicle Speed When standard mode is selected, speed displays in miles per hour. When metric mode is selected, speed displays in kilometers per hour.
Brake indicator Brake Indicator The brake indicator illuminates when the park brake is engaged or when a brake system failure has occurred. If the brake warning illuminates inspect the brake system before operating your vehicle. If the parking brake is engaged, release it. Check the brake fluid level. If it's low, add brake fluid. Check the hoses for cracks, scuffs and worn spots. If you discover signs of wear or damage, do not operate your vehicle. Your GEM Dealer can provide service. For more on brake maintenance, see your Owner's Manual.
Direction Indicators Direction Indicators A direction indicator flashes when a turn signal is active.
Low beam indicator Low Beam This lamp illuminates when the headlamp switch is set to low.
High Beam High Beam This lamp illuminates when the headlamp switch is set to high beam.
Seat Belt indicator Seat Belt When the key is turned on, the seat belt indicator lamp will illuminate if the driver's seat belt is not fastened. The lamp is a reminder to the operator to ensure all riders are wearing seat belts before operating.
Vehicle fault Vehicle Fault This lamp illuminates when the vehicle has a fault. When this illuminates for a fault condition, the wrench icon in the Rider Information Center (described below) also will flash.

Rider Information Center
The Rider Information Center is located in the instrument cluster. All segments of the Rider Information Center will light up for one second when you start the vehicle. If the instrument cluster fails to illuminate, a battery over-voltage may have occurred and the instrument cluster may have shut off to protect the electronic speedometer. if this occurs, your GEM Dealer can provide a proper diagnosis.

The information center is set to display standard units of measurement and a 12-hour clock at the factory.

Making up the Rider Information Center, as illustrated below, are the (1) Information Display Indicator, (2) Drive Mode/Drive Selection Indicator, (3) State of Charge Indicator, Miles/Kilometers Indicator (4) and (5) Fault Indicator.

Rider information center

The information display is where the clock, odometer, trip meter, state of charge, range meter, efficiency rate (EFF) or any existing fault codes or warnings messages will be displayed.

The odometer displays the distance traveled by the vehicle since manufacture.


Trip Meter
The trip meter displays distance traveled since the last reset of the trip meter. To reset, toggle to the trip meter display. Press and hold the MODE button until the meter resets to zero.

Trip meter

State of Charge
The battery state of charge mode displays the remaining system voltage level in percentage format.

state of charge

Range Meter
The range meter displays the approximate distance the vehicle could travel on the remaining battery voltage level.

Range Meter

Efficiency Rate
The efficiency rate displays the rate at which electrical power is consumed per mile or per kilometer. A higher number indicates less desirable efficiency. A lower number indicates better efficiency.

Miles/Kilometer Indicator
The miles or kilometers indicator (4) illuminates to indicate the mode of measurement selected.

The display can be changed to show either standard or metric units of measurement for each of the following settings.

Miles/kilometer indicator

Measurement Standard Display Metric Display
Distance Miles Kilometers
Time 12-Hour Clock 24-Hour Clock

To change standard to metric: 

1. Turn the key to the OFF position.

2. Press and hold the MODE button while turning the key to the ON position.

3. When the display flashes the distance setting, tap the MODE button to advance to the desired setting.

4. Press and hold the MODE button to save the setting and advance to the next display option.

5. Repeat the procedure to change the remaining display settings.

To exit the set-up mode, turn the key off. Wait 5 seconds and then turn the key on. The gauge displays the mode that was displayed prior to setting the units.

For more information, read Setting the Clock on Your GEM

When both the chassis fault lamp and the fault indicator (5) (the wrench symbol) illuminate, use the MODE button to toggle to VEH FLT on the display. Then press and hold the MODE button for three seconds to access the currently active trouble codes. Pressing the MODE button momentarily will toggle through all current trouble codes. Your authorized GEM Dealer can provide code details and diagnosis.

The drive mode/direction selection indicator (2) displays the drive mode. 

  • F = Forward
  • N = Neutral
  • R = Reverse (flashing)
  • C = Charging

The state of charge indicator (3) illuminates when the key is turned ON. It also illuminates eight to 10 seconds after the charging cord is connected, turning off when the batteries are 100 percent charged. To verify a full charge or to check the state of charge, turn the key ON. As charge is depleted, illuminated bars begin to turn off from right to left. Remaining bars indicate the remaining battery charge, which is shown in the below table.

Bars Percentage of Charge Remaining
1 Less than 10
2 10 to 20
3 20 to 30
4 30 to 40
5 40 to 50
6 50 to 60
7 60 to 70
8 70 to 80
9 80 to 90
10 90 to 100

Cold weather can have a drastic effect on all electric vehicles. The colder the ambient storage temperature, the slower the rate of charge and discharge of batteries. In the application of an electric vehicle like a GEM, cold weather will drastically decrease the achieved range on a charge.

GEM vehicles with lead-acid batteries do not factor battery temperature into state of charge. If batteries are stored at cold temperatures, the amount of available stored energy on a full charge is reduced. This is most pronounced at temperatures below 32 degrees Fahrenheit (0 degrees Celsius).

If a user is completely reliant on the battery meter's state of charge for determining range, GEM recommends that the vehicle be charged and stored in a location where the temperature is at least 50 F before use. When the vehicle has been stored in a warm location, the vehicle's battery meter will display a more accurate state of charge even if the GEM is used in colder temperatures, as long as it is used periodically and does not sit idle for an extended period.

If your GEM cannot be stored in a warm location, a user can estimate vehicle range being reduced approximately 10 percent for every 15 degrees below 80 F as captured in the table below. The temperature column refers to the ambient temperature that a vehicle was stored in.

Temperature (F/C) Battery Capacity (%)
80 / 27 100
65 / 18 90
50 / 10 80
35 / 2 70
20 / -7 60
5 / -15 50
-10 / -23 40
-25 / -32 30

Vehicles equipped with Li-Ion batteries also will experience range reduction due to cold, but the state of charge is more accurately captured on the vehicle display. Many factors can affect a vehicle's range on a charge: driving style, terrain, increased vehicle payloads, cab heater usage and other electrical accessory usage. Even though things like these can decrease a vehicle's range, they should be accounted for in the state of charge reading.

For more information on 2016 and newer GEM gauges, watch the video below. 

GEM Classic models (early 2016 and older) feature an LCD display on the console. The indicators on the display are shown below.

LCD display

The speedometer is located in the speedometer/service code/charge display indicator at the top of the LCD display. When driving, the speedometer displays vehicle speed in either miles per hour (mph) or kilometers (km/h). The display can be changed to display either standard or metric units of measurement.

Charge Indicator
When the batteries are charging, this area displays the percentage of charge.

battery charge display

Service Indicator

Service indicator light

When the service indicator illuminates, a service code displays in this area. Common service codes are detailed and shown below. If any other codes display contact your authorized GEM Dealer.

Code Condition Remedy
06 Accelerator pedal is depressed. No direction is selected. Release pedal, apply brakes, make sure direction switch is locked into a position.
11 Accelerator pedal was depressed before the key was turned on. Turn key off, release accelerator pedal and then turn the key on.
15 Low state of charge on batteries. Charge batteries before operating.
16 High state of charge on batteries.   Turn headlights on for several minutes and then turn the key switch off and on. 

service codes

Speedometer, Odometer, Trip Meter Indicator
Below the speedometer/service code/charge display is the odometer/trip meter indicator. The odometer indicator logs the total distance the vehicle has been driven since it was manufactured. The trip meter is useful for logging distances traveled on separate trips. The display can be changed to display either standard or metric units of measurement.

To change the function of the speedometer and odometer from miles per hour (mph) to kilometers per hour (km/h) and from miles to kilometers, use the trip/odometer switch.

The trip/odometer switch is located to the right of the steering wheel, as shown below.

The trip switch has several functions: 

  • Toggle displays: Press and hold for less than 2 seconds to toggle between the odometer and trip meter modes on the display. 
  • Change units of measurement: Press and hold for 10 to 12 seconds while the display is in odometer mode to change the distance/speed unit of measurement.
  • Reset trip meter: Press and hold for 3 to 9 seconds while the display is in trip mode to reset the trip meter to zero.
  • Show battery power: Press and release twice to display consumed power.

LCD display

Turn Signal Indicator
The corresponding turn signal indicator flashes when a signal is activated.

Turn signal indicator

Brake Warning Indicator
The brake warning illuminates when the park brake is engaged or when a brake system failure has occurred. If the brake warning illuminates, check the following items before operating the vehicle.

brake warning indicator

Brake System Item Solution
Park Brake Release the park brake.
Brake Fluid Check hoses for cracks, scuffs and worn spots. If you discover signs of wear or damage, do not operate the vehicle. See your authorized GEM Dealer for service. 

Worn or damaged brake hoses can cause brake failure. Always have worn or damaged brake hoses replaced promptly.

High Motor Temperature Warning

high motor temperature warning

If the high motor temperature warning illuminates, or if service code 41 displays in the speedometer/service code display, the motor or motor controller may be overheating. Continued operation could result in motor damage. Stop the vehicle promptly, preferably in a cool or shaded location, and wait for the motor to cool down. Do not operate the vehicle until the warning indicator turns off. Climbing steep grades while hauling heavy loads may overheat the motor or controller and shorten component life.

Charger Connected Indicator
The charger connected indicator illuminates approximately 8 to 10 seconds after the charger is connected and remains on until the charger is disconnected. If the indicator fails to illuminate when the charger is connected, the charger may not be charging. If this occurs, make sure the main disconnect switch is in the ON position.
Charger connected indicator

State of Charge Indicator
The state of charge/battery discharge indicator contains eight green bars, a yellow bar and a red bar. It shows available battery capacity by illuminating one or more bars.

state of charge/battery

The indicator illuminates when the key is turned on. It also illuminates 8 to 10 seconds after the charging cord is connected, turning off when the batteries are 100 percent charged. To verify a full charge or to check the state of charge, turn the key on.

As a charge is depleted, bars begin to turn off from right to left. Remaining bars indicate remaining battery charge.

If only red and yellow bars are illuminated, charge is very low. Recharge as soon as possible. A full recharge cycle (from one red bar to fully charged) may take 8 hours or more for a standard battery pack and up to 14 hours for a heavy duty battery pack. See the following table for the relationship between remaining bars and percent of charge.

Bars Color Percent of Charge
1 Red (Far Left) Less than 10
2 Yellow 10 to 20
3 Green 30 to 40
4 Green 30 to 40
5 Green 40 to 50
6 Green 50 to 60
7 Green 60 to 70
8 Green 70 to 80
9 Green 80 to 90
10 Green (Far Right) 90 to 100

Batteries can be permanently damaged (and the warranty voided) if allowed to remain 30 days or more with low charge. Fully charge batteries before storing. In hot climates, battery self-discharge will increase. In cold climates, batteries could freeze if not properly charged. If the vehicle will not be used for 10 or more days, follow the battery storage procedures found in your Owner's Manual.

Current Limiting Mode Indicator

Current limiting mode indicator

The current limiting mode indicator illuminates if the system limits the amount of current available due to extremely low battery voltage. The state of charge/battery discharge indicator also will indicate low voltage. If you continue to drive, acceleration and power will begin to decrease. The controller eventually will shut down the vehicle to protect the batteries and motor from damage. If the state of charge is low and the current limiting indicator is illuminated, stop the vehicle and recharge the batteries.

Seat Belt Indicator
When the key is turned on, the seat belt warning illuminates for 45 seconds as a reminder for occupants to fasten seat belts.

seat belt indicator

Direction Indicators
When the key is on, one of the three direction indicators illuminate to indicate the selected position of the direction switch (Reverse, Drive Low or Drive High).

Direction indicators

High or Low Beam 
Either the high beam or low beam headlight indicator illuminates to indicate which headlight beam is selected.

High beam/low beam indicator

GEM eM1400 LSV models have separate indicator lamps (1), speedometer/odometer (2) and a battery discharge indicator (7) located on the dash. See the diagram below.

e1400 gauges

Indicator Panel
The indicator panel is located above the steering wheel on the console (1). The indicator lights activate when the key is in the ON position. See the following table for more on the indicator lights.

Icon Indicator Condition
malfunction indicator Malfunction

If the light illuminates steady, it means
 one of three things:

  • Electrical malfunction (the flash sequence on the controller indicates the type; see the troubleshooting guide in your Owner's Manual).
  • The accelerator pedal is pressed. Release the pedal to extinguish the lamp.
  • The charger is plugged in. The vehicle will not operate when charging. Unplug the charger and wait for the charge indicator to turn off before operating the vehicle.
Park Brake Park Brake The light illuminates steady when the park brake is engaged.
Gear position indicator Gear Position

The light illuminates steady to indicate
 the selected gear.

R = Reverse
N = Neutral
F = Forward

Motor/Controller High Temperature Motor/Controller High Temperature A flashing light indicates reduced performance due to elevated temperature. A steady light indicates power delivery terminated to protect against overheating. If either occurs, stop the vehicle and turn the key off. Allow the motor and controller to cool adequately before operating.

The speedometer displays vehicle speed in miles per hour (mph).


The odometer records and displays the total distance traveled by the vehicle. The odometer will display in miles for the first 5 seconds after the key is turned to the ON position and then the speed will display. The odometer cannot be reset and can only display in miles. 

Hour Meter
The hour meter records and displays the hours of actual "key on" time since manufacture.

Battery Discharge Indicator
The battery discharge indicator, shown below, displays the amount of charge removed (used) from fully charged batteries. When the batteries are fully charged, the gauge will display 100 percent. The charge status indicator will be solid green. Avoid discharging the batteries more than 80 percent.


When charging the batteries, the charge status indicator light flashes and changes color to indicate the status of the charge. Refer to the table below.

Color Indication Code Definition
Green Solid Charge is complete. Charger is in maintenance mode.
Green Fast Flash Less than 80 percent of charge is completed.
Green Slow Flash More than 80 percent of charge is completed.
Amber Flashing Power mode is reduced. Low AC voltage or high internal charger temperature exists. Remove seat to improve air flow.
Red Flashing Charger error exists; reset charger power and refer to Troubleshooting Guide in Owner's Manual.

For more on your GEM, including maintenance tips, procedures and specifications, consult your Owner's Manual or see an authorized GEM Dealer. 

Note that high water pressure may damage gauge components. Wash the vehicle by hand or with a garden hose, using mild soap. Certain products, including insect repellents and chemicals, will damage the speedometer lens and other plastic surfaces. Do not use alcohol to clean the instrument cluster. Do not allow insect sprays to contact the lens. 

For more information on your GEM instrument cluster, consult your Owner’s Manual
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