Uploaded July 2026 | Updated September 2026, 2 weeks ago
For most passenger cars, the recommended mounting location is the inside of the windshield directly behind or just below the rearview mirror. This location provides the best signal to overhead toll readers while keeping the transponder largely out of the driver's line of sight.
Where to Place an E-PASS Transponder
Clean and dry the inside of the windshield.
Sit in the driver's seat and locate the rearview mirror.
Mount the transponder:
Directly behind the rearview mirror, or
Just below the mirror, depending on the style of transponder.
Make sure the logo is facing the correct direction according to the instructions.
Do not place it:
On the dashboard
On tinted strips at the very top of the windshield
Behind metalized or heated windshield areas unless your vehicle manual specifies that location
Use only one active transponder per vehicle. Having multiple active toll tags in the same vehicle can result in duplicate charges.
Vehicles With Special Windshields
Some vehicles have:
Heated windshields
Metal-oxide or infrared-reflective glass
Advanced driver-assistance camera housings
These can interfere with the transponder signal. In those cases, your owner's manual may specify a special "RF window" near the mirror, or you may need a bumper-mounted transponder.
Other Toll Companies That Use the Same Mounting Location
The same basic windshield placement is recommended by many toll agencies, including:
E-PASS
SunPass
E-ZPass
Peach Pass
NC Quick Pass
LeeWay
I-PASS
RiverLink
Most of these systems recommend mounting the transponder behind or immediately below the rearview mirror because it provides a clear path to the roadside antennas while minimizing obstruction to the driver. #epass
Disclaimer: As an Amazon Associate I earn from qualified purchases.
For most passenger cars, the recommended mounting location is the inside of the windshield directly behind or just below the rearview mirror. This location provides the best signal to overhead toll readers while keeping the transponder largely out of the driver's line of sight.
Where to Place an E-PASS Transponder
Clean and dry the inside of the windshield.
Sit in the driver's seat and locate the rearview mirror.
Mount the transponder:
Directly behind the rearview mirror, or
Just below the mirror, depending on the style of transponder.
Make sure the logo is facing the correct direction according to the instructions.
Do not place it:
On the dashboard
On tinted strips at the very top of the windshield
Behind metalized or heated windshield areas unless your vehicle manual specifies that location
Use only one active transponder per vehicle. Having multiple active toll tags in the same vehicle can result in duplicate charges.
Vehicles With Special Windshields
Some vehicles have:
Heated windshields
Metal-oxide or infrared-reflective glass
Advanced driver-assistance camera housings
These can interfere with the transponder signal. In those cases, your owner's manual may specify a special "RF window" near the mirror, or you may need a bumper-mounted transponder.
Other Toll Companies That Use the Same Mounting Location
The same basic windshield placement is recommended by many toll agencies, including:
E-PASS
SunPass
E-ZPass
Peach Pass
NC Quick Pass
LeeWay
I-PASS
RiverLink
Most of these systems recommend mounting the transponder behind or immediately below the rearview mirror because it provides a clear path to the roadside antennas while minimizing obstruction to the driver. #epass
Disclaimer: As an Amazon Associate I earn from qualified purchases.
