TREK 5313794 CarBack Radar Owner’s Manual
- May 15, 2024
- TREK
Table of Contents
TREK 5313794 CarBack Radar
Basic operation
First-time use
To turn the car back on, hold the power button for 1 second.
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To turn the CarBack off, press and hold for 1 second.
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When the CarBack is off, you can check the battery status with a single click and the fuel gauge will light up.
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Turn the CarBack on before pairing to a bike computer or smartphone for the first time. Below are instructions for compatible Garmin and Wahoo computers.
NOTE: Instructions may vary depending on your bike computer and model. -
Trek recommends reviewing the pairing instructions that came with the vour bike computer or
Garmin
- Ensure both the Garmin computer and the CarBack are charged and the Garmin is powered on.
- Turn on the CarBack with a 1-second hold. You are now in pairing mode.
- Make sure your CarBack is within range (check your Garmin manual for appropriate distance).
- On the Garmin, navigate to the main menu → Settings → Sensors & Accessories → Add Sensor or Search to initiate a search for available sensors.
- Once the Trek CarBack is detected, select it from the list of available options.
- Follow any on-screen prompts to complete the pairing process.
- Once the devices find each other, a successful pairing message should appear on the Garmin screen.
- Once paired with the CarBack, the Garmin will control when the light is on and what mode it is in. Trek recommends Auto mode.
- The CarBack light has two settings for turning on and off. You can change this setting on compatible Garmin computers.
- Option 1: When you power on your Garmin, your light on the CarBack turns on. When you power off your Garmin, your CarBack light will power off.
- Option 2: When you press start for your Garmin timer, the light will turn on. When you save your ride, the light will turn off.
Wahoo
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Make sure both the Wahoo computer and the CarBack are charged and your Wahoo is powered on.
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Turn on the CarBack with a 1-second hold. You are now in pairing mode.
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Make sure your CarBack is within range (check your Wahoo manual for appropriate distance).
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On the Wahoo, navigate to Settings → Radar Pairing → Add new sensor → select Radar from the list of available sensors to initiate a search for available options.
- Once the devices find each other, a successful pairing message should appear on the Wahoo screen.
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Verify connection: Before riding, ensure your Wahoo display shows relevant information from the CarBack.
NOTE: The Wahoo computer does not control the CarBack light mode; you will need to use the button on the CarBack to cycle through light modes to pick your desired setting. -
For more information, check out the FAQ section on the Trek CarBack Radar product page on trekbikes.com.
About this product
The CarBack is a Bluetooth & ANT + compatible radar system with an integrated light to help increase a rider’s situational awareness on the road. The radar can communicate with select bike computers and smartphones. For detailed instructions on setting up your device, please refer to the user manual provided by the respective brand’s bike computer.
WARNINGS:
- Do not use it if the battery is impacted. Also do not puncture, crush, deform, disassemble, or heat a lithium-ion battery above 140° F (60° C).
- Damage to the battery may result in a fire, explosion, and/or exposure to specks of lithium or lithium dust.
- The light is very bright. Do not stare at an operating light. Staring may be harmful to the eyes.
- Proper use of the device can enhance your riding experience, but improper use can lead to distractions and severe injury or even death. Exercise caution and use the device appropriately and attentively.
- Proper use: Quickly check the radar device information while maintaining focus on your surroundings (when making turns, passing, changing lanes, etc.). Avoid prolonged staring or getting distracted by the device’s display.
- Improper use: Overly focusing on the display may cause you to overlook obstacles or dangers, putting you at risk of serious consequences.
- IMPORTANT: Check your local lighting laws. Flashing lights and full brightness may not be allowed in all locations. The CarBack radar light does not conform to the German road traffic regulation StVZO.
Specifications
- Battery information: 154mA (typical), 3.7 Vdc, 2000mAh
- Battery charging temperature: 50°F to 113°F (10°C to 45°C)*
- Battery operating temperature: 14°F to 140°F (-10°C to 60°C)*
- Battery storage temperature: 14°F to 113°F (-10°C to 45°C)*
- Light lumens: 90
- Water ingress rating: IPX7
- Weight: 70g (2.50z)
- Charge port: USB-C
- Dimensions: 70 x 50 x 30mm
- Detection: Up to 7 vehicles
- Detection range: 1-240m
- Runtime: 7 hours (dependent on traffic, may exceed 7 hours)
- Charge time: 4 hours
Light Modes
Press the button to cycle through the modes.
Basic operation
Download the Trek mobile app and follow the prompts to connect with the
CarBack. See also the CarBack supplement for more instructions.
First-time use
Turn the car back on and pair it to your smartphone or compatible bike
computer. The process will vary between smartphones and bike computers, but
typically:
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Search for the new sensor.
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Pair sensor/radar.
NOTE : Most bike computers will recognize the device as both a light and a radar. -
Check your bike computer. It may be set up to automatically power up and power down the light network when you start/stop your ride or start/stop/pause your timer.
With the CarBack paired to your bike computer Power up sequence Power down sequence
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Turn on your bike computer.
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The bike computer is powered off.
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The computer will turn on the light.
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Light and CarBack will turn off.
NOTE: Make sure your CarBack light is on. Not all computers work the same. Check your bike computer’s manual for details. -
Check to make sure the CarBack turns on.
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The computer will connect to the CarBack.
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If the bike computer is disconnected from the CarBack, the radar and light may stay on which may deplete the battery.
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For example, this may happen if the bike computer is removed from the bicycle and taken away from the CarBack.
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The fuel gauge lights will remain on any time the radar is active (on). The CarBack unit will automatically turn on/off when it has been previously paired with a compatible bike computer.
Reset
To reset the car back to factory default settings:
- With the car back on, press and hold the power button for 15 seconds.
- The main LED will flash once at 8 seconds and again at 15 seconds.
- Release the button after the second flash.
- Once reset, the wireless broadcast will be disabled until the first time the CarBack is powered on.
Parts list
- CarBack unit 5313794
- Quick Connect
- Plus Mount Rear W5314368
- Optional Blender
- Saddle Mount 5283888
- Compatible with most
- Bontrager saddles USB-C
- Cable W5268686
- Phone or ANT+ radar-compatible computer needed to pair
Installation
NOTE
To operate correctly, the unit must:
- Be between 70-120cm (27.5-47 in) from the ground,
- Point straight backward (up/down, left/right),
- Not be blocked by your wheel, saddlebag, fender, etc.
WARNING
A bicycle without correct lights and reflectors might be difficult for other
people to see, and you might not be able to see them. If you cannot see, or
other people cannot see you, you could have an accident. Make sure your lights
are set up, and operating correctly, and that batteries are charged.
WARNING
Various factors will obstruct the performance of the device, resulting in
reduced efficiency and effectiveness. Riders are directly behind you and mud
or ice on the device may block the radar. Hilly or curvy roads may give you
intermittent signals and vehicles driving at the same speed right behind you
may be less recognizable. Failure to understand and be aware of these factors
can lead to serious injury or death. Radar detection zone.
Charging the battery
The CarBack was charged before packaging, but we recommend you charge it
before first use.
IMPORTANT: For best results, charge at room temperature in a dry place.
Use an approved (ex. UL certified) USB-C charger rated for 500mA or greater.
Avoid extreme conditions including wet, cold, or extreme heat.
- Open the USB port cover.
- Plug the USB-C charger cable into the USB port on the unit.
- Plug the cable into a computer or wall adapter.
- When all lights are off, the charge is complete. Unplug the charger cable and close the USB port cover.
- If you charge your computer at the same time as your CarBack it may keep your
- CarBack on after unplugging. When unplugging the CarBack after charging, turn the CarBack off if the fuel gauge is still on. Press and hold the power button for 1 second to power down.
IMPORTANT: Ensure the USB cover is latched before riding in rain or wet conditions. If the USB cover is not closed, damage to the unit may occur. Do not leave the unit outdoors when not in use.
NOTE: If the main button indicator is flashing red while plugged in, the light is either too hot or too cold to charge. Charging will begin when the light is between 32F (0°C) and 104F (40°C).
Carback battery charging and care
Low battery mode
A ge batter lies he dignity indicator ail lash red. The radar does not operate
in this low-battery
NOTE: Your bike computer will notify you that the radar has been
disconnected.
Caring for the battery
- Store the CarBack at room temperature in a dry place. Avoid moisture, or extreme heat or cold.
- Store the CarBack in a charged condition. Battery life will decrease if the battery is stored in a fully discharged condition.
- Over time, the runtime of the battery will diminish. Expect about 500 full charges, depending on care. After a full life, the battery will continue to charge but with a lower runtime.
- When the runtime is unsatisfactory, do not open the case of the light or incinerate; please recycle.
Traveling with the battery
Make sure the CarBack is turned off during travel. When travelling by air,
verify with your carrier how lithium-ion batteries of this capacity must be
treated. Often these devices need to be packed in carry-on luggage.
Protection
The CarBack has been designed and tested for use in all riding conditions and
has an ingress rating of IPX7. The CarBack is not intended to be stored
outdoors and should be stored and charged indoors after use.
Recycling
Please recycle the CarBack with the battery. In the US you can find out where
to do this at www.call2recycle.org.
WARNING
If you or someone you are riding with has photosensitivity to flashing lights,
ensure this light does not trigger an episode before use on the road. While
the flash pattern is designed to be outside of the frequency range most
associated with
causing a photosensitive reaction (5-60Hz), each individual’s response may
vary, and having an episode while riding may result in serious injury or
death.
Statements of Regulatory Compliance
FCC Compliance
Carback – FCC ID: 2AHXD-5313794
This device complies with part 15 of the FCC Rules. Operation is subject to
the following conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including
interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits
for a Class B digital device, under Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used by the instructions, may cause
harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. This product
may cause interference to radio equipment and should not be installed near
maritime safety communications equipment or other critical navigation or
communication equipment operating between 0.45-30 MHz. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
- Consult your bike shop or an experienced radio / TV technician for help.
NOTES: TREK BICYCLE CORPORATION IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY TREK BICYCLE CORPORATION OF THIS DEVICE COULD VOID THE USER’S AUTHORITY TO OPERATE THE DEVICE. Exposure to radio frequency energy. The radiated output power of this device meets the limits of FCC/IC radio frequency exposure limits. This device should be operated with a minimum separation distance of 5mm (1/4 inch) between the equipment and a person’s body.
IMPORTANT NOTE
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment and meets the FCC radio frequency (RF) Exposure
Guidelines. This equipment has very low levels of RF energy that is deemed to
comply without testing of specific absorption rate (SAR).
European Union Compliance
Trek Bicycle Corporation hereby declares that the wireless device identified
as CarBack Radar’ complies with the following European Directives:
- Radio Equipment Directive 2014/53/EU
- EMC Directive 2014/30/EU|
- Low Voltage Directive 2014/35/EU
- RoHS Directive 2011/65/EU|
- The frequency and the maximum transmitted power in the EU are listed below: 2.4GH z ANT + Plus:
EIRP 1.81 dBm, 2.4GHz BT(LE): EIRP 3.37 dBm, 76-81GHz: EIRP -11.81 dBm The full text of the EU declaration of conformity is available from your dealer, or at the following internet address: https://www.trekbikes.com/us/en_US/coc- doc/ CarBack does not comply with German StVZO regulations.
Compliance UK
Trek Bicycle Corporation hereby declares that the device identified as
‘CarBack Radar’ complies with the following UK legislation:
CA
- The Electromagnetic Compatibility Regulations 2016
- Electrical Equipment (Safety) Regulations 2016
- The Restriction of the Use of Certain Hazardous Substances in Electrical and
Electronic Equipment Regulations 2012
Full text of the UK declaration of conformity is available from your dealer,
or at the following internet address: https://www.trekbikes.com
European and International consumers, please contact your bike shop. This
symbol on the products) and/or accompanying documents means that used
electrical and electronic products should not be mixed with general household
waste.
For proper treatment, recovery, and recycling outside the US, please take this
product(s) to designated collection points. Alternatively, in some countries,
you may be able to return your products to your local retailer upon purchase
of an equivalent new product.
Disposing of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the environment, which could otherwise arise from inappropriate waste handling. Please contact your local authority for further details of your nearest designated collection point. Penalties may be applicable for incorrect disposal of this waste, by your national legislation.
North America
Trek Bicycle Corporation
801 West Madison Street
Waterloo, WI 53594 USA
Tel: 1-800-585-8735