Directed Electronics 535T Manual

The Directed Electronics 535T is a professional-grade vehicle security system with advanced features including remote start capability, two-way communication, long-range operation, shock sensor, status indicator, valet mode, and programmable options. Designed for reliable vehicle protection with easy installation and user-friendly operation. Below are key sections for safety, features, installation, programming, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. Programming & Setup 4. Specifications 5. Controls and Operation 6. Remote Functions 7. Security Features 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Main control unit, Two-way remote transmitter, Shock sensor, Status LED, Valet switch, Wiring harness, Siren.

Feature	Description
Two-way remote	Confirms commands with LED and vibration feedback
Remote start	Starts vehicle from up to 1500 feet away
Shock sensor	Detects impacts and attempted break-ins
Status LED	Shows system status and alarm triggers
Valet mode	Temporarily disables security features
Programmable options	Customizable settings for user preferences
Panic mode	Activates siren for emergency situations
Door lock control	Automatic door locking/unlocking
Engine immobilizer	Prevents unauthorized vehicle starting
Trunk release	Remote-controlled trunk opening

Installation

Professional installation recommended. Unpack and inspect all components.

Mount control unit: Secure in dry, protected location under dashboard.
Connect wiring: Follow vehicle-specific wiring diagram for proper connections.
Install shock sensor: Mount on solid surface away from moving parts.
Connect siren: Mount in engine compartment with horn facing downward.
Install valet switch: Mount in accessible but concealed location.

WARNING! Disconnect vehicle battery before installation. Ensure all connections are secure and properly insulated.

Programming & Setup

System must be programmed before first use.

Enter programming mode: Turn ignition on/off three times within 10 seconds.
Program remote transmitters: Press and hold remote buttons as indicated.
Set features: Use programming menu to configure door locks, remote start, etc.
Test system: Verify all functions operate correctly.
Exit programming: Turn ignition off and remove key.

CAUTION! Follow programming instructions exactly. Incorrect programming may cause system malfunctions.

Specifications

Operating Range: Up to 1500 feet line-of-sight
Frequency: 315 MHz or 434 MHz (region dependent)
Battery: 12V DC vehicle power with backup battery
Remote Battery: CR2032 lithium (two required)
Shock Sensor: Two-stage sensitivity adjustment
Siren Output: 120 dB piezoelectric siren
Operating Temp: -40°F to 185°F (-40°C to 85°C)
Compatibility: Most gasoline vehicles 1996 and newer

Controls and Operation

System controlled via remote transmitter and valet switch.

Remote Buttons: LOCK, UNLOCK, REMOTE START, PANIC, TRUNK. Status LED: Solid = armed, Blinking = triggered, Off = disarmed.

Valet Switch: Press and hold for 3 seconds to enter/exit valet mode. Programming: Access via ignition sequence and remote button combinations. Features: Remote start timer (5-60 minutes), Door lock delay (0-30 seconds), Shock sensor sensitivity (1-7 levels).

Remote Functions

Two-way remote provides confirmation of all commands.

Arm system: Press LOCK button once - doors lock, siren chirps.
Disarm system: Press UNLOCK button once - doors unlock.
Remote start: Press REMOTE START twice - engine starts, LED confirms.
Panic mode: Press and hold PANIC for 2 seconds - siren activates.
Trunk release: Press TRUNK for 2 seconds - trunk opens if equipped.
Silent arm: Press LOCK twice - arms without siren chirp.

Tip: Remote will vibrate/LED flash to confirm command reception.

Security Features

Advanced security protection with multiple detection methods.

Shock sensor: Detects impacts and glass breakage with adjustable sensitivity.
Door triggers: Monitors all doors, hood, and trunk openings.
Engine immobilizer: Prevents hot-wiring and unauthorized starting.
Anti-scan: Prevents code grabbing by thieves.
Status monitoring: Continuous monitoring of all protected zones.
Panic protection: Instant activation for emergency situations.

WARNING! Test all security features after installation. Ensure proper sensor adjustment.

Maintenance

Regular maintenance ensures optimal performance.

Check remote batteries monthly. Test system operation weekly. Clean remote contacts with dry cloth. Keep control unit dry and free of debris.

CAUTION! Do not expose system to excessive moisture. Use only recommended batteries.

Regulatory Information

FCC Part 15: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. IC: Complies with Industry Canada license-exempt RSS standard(s). Copyright © 2025 Directed Electronics; all rights reserved. For technical support, visit www.directed.com or contact 1-800-876-0800.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Remote not working	Dead batteries/obstructions	Replace batteries; ensure clear line of sight to vehicle.
System won't arm	Open door/trunk	Check all doors, hood, and trunk are fully closed.
False alarms	Sensor sensitivity	Adjust shock sensor sensitivity lower.
No remote start	Safety features	Check parking brake, hood pin, and gear position.
No siren sound	Wiring/connection	Check siren connections and wiring integrity.

Reset: Disconnect vehicle battery for 30 seconds to reset system.

Service: 1-800-876-0800; www.directed.com