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Convertible Power Soft Top Control Module

 
Ernest
Estimable Member Moderator

Important: Use this guide if you reinstalled your repaired Convertible Power Soft Top Control Module and the problem is still happening.

  • Step 1: Confirm the exact symptom
    • Top won’t operate, works intermittently, blown fuses/electrical issues, faulty micro-switch symptoms, and/or hydraulic fluid leak symptoms
    • Note when it fails (only cold/hot, after rain/wash, after sitting, or only while driving)
  • Step 2: Verify battery voltage and charging health
    • Convertible systems are very voltage-sensitive
    • Low voltage can disable top operation or cause intermittent behavior
    • If the battery was recently dead or jump-started, fully charge it and re-test
  • Step 3: Check all soft-top related fuses and relays
    • Check fuses for the soft top control module, pump/motor, and any “top/roof/convertible/body” labeled fuses
    • If a fuse is blown, replace it once and re-test
    • If it blows again, stop—inspect wiring and the pump/motor for a short before suspecting the module
  • Step 4: Make sure vehicle conditions for operation are met
    • Vehicle in the required gear position (often PARK)
    • Parking brake status (if required)
    • Trunk divider/cargo partition in the correct position (if equipped)
    • Latches fully released/engaged as required
    • Windows indexed/down as required by the vehicle (model dependent)
  • Step 5: Scan the vehicle and record codes (if available)
    • Perform a full vehicle scan and record soft top/body-related codes
    • Clear codes and see what returns after attempting to operate the top
  • Step 6: Inspect pump/motor wiring and connectors
    • Inspect pump/motor connector for corrosion, moisture, loose pins, or overheated terminals
    • Inspect harness routing near hinges/trunk areas and any flex points for rubbed-through wiring
    • Wiring shorts can cause blown fuses and “won’t operate” symptoms
  • Step 7: Verify power and ground at the pump/motor (under load)
    • Confirm power feed and ground integrity under load
    • Weak grounds can mimic a bad module and cause intermittent operation
  • Step 8: Micro-switch and latch input checks
    • If the top starts then stops, or works only sometimes, a latch or position micro-switch may be inconsistent
    • Check connector seating at latch/position switches and inspect harness at moving joints
  • Step 9: Hydraulic leak check (if equipped with hydraulic system)
    • Inspect for low fluid signs, dampness near cylinders/lines, or fluid in the trunk/roof mechanism area
    • A hydraulic leak can prevent proper operation and can overload the pump/motor over time
  • Step 10: Inspect and reseat the control module connectors
    • Inspect for corrosion/green pins, moisture, bent/pushed-out pins, loose terminals, or heat damage
    • Reseat connectors fully and confirm latches lock
  • Step 11: Re-test and re-scan
    • Cycle the top multiple times (open/close) and confirm consistent operation
    • Re-scan and note any codes that return immediately vs. only after operation
  • If the issue is still present
    • Call or email UpFix for the fastest help, especially if the issue happens immediately after install
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Topic starter Posted : 01/07/2026 9:53 pm
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