DTC P1616: Unregistered Keyless Start Control Module: Troubleshooting

2013 Suzuki SX4 Crossover, Automatic CVT TransSECTION Troubleshooting
P1616: TROUBLESHOOTING CHART

Step Action YES NO
Was "Immobilizer Control System Check" performed?  Go to Step 2. Go to IMMOBILIZER CONTROL SYSTEM CHECK .
Registration of the ignition key 
  1. Register the ignition key with ECM referring to REGISTRATION OF THE IGNITION KEY .

Was registration of ignition key completed? 
Recheck ECM for DTC. Go to Step 3.
DTC check 
  1. Check DTC referring to DTC CHECK .

Is DTC P1618 and/or P1615 detected other than P1616? 
Go to DTC P1618 troubleshooting. Go to DTC P1615 troubleshooting.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.