P0513 on 2006-2010 Jeep Commander: Incorrect Immobilizer Key Causes and Fixes

What's Unique About the 2006-2010 Jeep Commander

For the 2006-2010 Jeep Commander (XK) and its platform-mate, the Grand Cherokee (WK), the security system evolved. Early models (2006-2007) typically use a Sentry Key Immobilizer Module (SKIM) which is a separate module with an antenna ring around the ignition cylinder. Later models (2008-2010) transitioned to a Wireless Ignition Node (WIN), which integrates the key reader, ignition switch, and immobilizer functions into a single unit. 🎬 Watch this step-by-step WIN module replacement guide. A common and frustrating issue for owners is the failure of this module (either SKIM or WIN), which can be difficult to source as some parts have been discontinued by Mopar. This often leads owners to seek specialized repair services for the original module or PCM reprogramming to bypass the security system entirely.

Symptoms You May Notice

• Engine cranks but will not start
• Engine starts and stalls after 2-3 seconds
• Red security indicator light (a dot or key symbol) is illuminated or flashing on the dashboard
• Check Engine Light is on
• Remote key fob functions (lock/unlock) may or may not work
• Ignition key may not turn in the ignition (on WIN module vehicles)
• A 'Damaged Key' message may briefly appear on the instrument cluster

Most Likely Causes

1. Defective or Unprogrammed Key Fob 🔴 High Probability → Shop Keyless Entry Transmitter Keys can be damaged by being dropped, exposed to moisture, or the internal transponder chip can fail over time. Using a non-programmed duplicate key will also trigger this code. A damaged key was identified as the cause in a 2007 Grand Cherokee with P0513.
   How to confirm: Try starting the vehicle with a known-good spare key. If the spare key works, the original key is faulty. If both keys fail, the problem is likely with the vehicle's security module.
   Typical fix: Replace the faulty key fob and have the new key programmed to the vehicle by a dealer or qualified automotive locksmith. 🎬 Watch how to program a new Jeep key yourself.
   Est. part cost: $100-$250
2. Failed Wireless Control Module (WCM/SKIM) or Wireless Ignition Node (WIN) 🟡 Medium Probability The module that reads the key's signal is a known failure point on this platform. A Reddit user with a 2006 Commander confirmed a dealership diagnosed a faulty SKIM module, and the part was discontinued. Internal component failure within the WIN/SKIM is common, leading to an inability to read the key's transponder chip. Manufacturer TSB #S2508000085 notes that replacing related modules like the BCM can also trigger an active P0513 "Invalid SKIM Key" state resulting in a no-crank, no-start condition.
   How to confirm: This requires professional diagnosis. A technician will use a scan tool to check for communication with the WCM/WIN. If the module is unresponsive, sets internal fault codes (like B1A35), or fails to recognize any keys, it is the likely culprit.
   Typical fix: Replace or repair the WCM/SKIM/WIN module. Several companies offer a repair service where you send in your original module and keys for rebuilding, which avoids the need for reprogramming. A new module must be programmed to the vehicle's PCM and keys.
   Est. part cost: $200-$500
3. PCM Programming or Communication Error ⚪ Low Probability As documented in TSB S2208000073, this code can be set after a PCM replacement or software update if the security data is not correctly transferred. Similarly, TSB #S2225000003 highlights that an "Invalid Skim Key" setting may occur in the PCM specifically after programming a replacement "generic" PCM. A dead or recently replaced vehicle battery can sometimes cause a loss of synchronization between modules, a common issue on many FCA vehicles.
   How to confirm: This is confirmed if the code appeared immediately after the PCM was flashed/replaced or after a significant electrical event like a jump-start or battery replacement. A user on a Reddit forum initially suspected a complex immobilizer issue but found the root cause was simply a dead battery.
   Typical fix: A technician must use a dealer-level scan tool (like wiTECH) to perform the "PCM Replaced" routine and a "Proxy Configuration Alignment." This re-establishes the security handshake between the PCM, BCM, and WCM/SKIM.
   Est. part cost: $0 (labor only)
4. Dead Key Fob Battery ⚪ Low Probability → Shop Vehicle Battery While the remote functions require a battery, the transponder chip for starting the engine is typically passive (powered by the car's antenna). However, on some systems, a very weak fob battery can cause erratic behavior or prevent the WIN module from properly reading the key.
   How to confirm: Replace the battery in the key fob (usually a CR2032). It's a cheap and easy first step before pursuing more complex diagnostics.
   Typical fix: Replace the CR2032 battery inside the key fob.
   Est. part cost: $1-$5

Rare But Worth Checking

• Faulty Ignition Switch Antenna Ring: → Shop Ignition Switch On earlier models with a separate SKIM, the antenna ring around the ignition lock cylinder can fail or have a poor connection, preventing the key's signal from being read. This can mimic a full SKIM module failure.
• Aftermarket Remote Starter Interference: Improperly installed aftermarket remote start systems can interfere with the factory immobilizer system, leading to intermittent P0513 codes. A user on a forum experienced this, though their ultimate issue was a weak battery.

Diagnosis Steps

1. Attempt to start the vehicle with all known keys. If a spare key works, the primary key is the issue.
2. If no keys work, replace the battery in one of the key fobs (typically CR2032) as a precaution and try again.
3. Visually inspect the key for any physical damage, such as cracks or melting, which could indicate internal damage.
4. Check the main vehicle battery. A weak or failing battery is a known cause of electrical gremlins, including this code.
5. Scan the PCM, BCM, and WCM/WIN/RFH for trouble codes using a scan tool capable of reading manufacturer-specific and body codes.
6. Using the scan tool, access the WCM/WIN live data and check the status of the immobilizer system. Verify if it recognizes the key being inserted or if it reports 'No Fob' or 'Damaged Key'.
7. If the code appeared after a PCM replacement or battery change, perform the 'PCM Replaced' and 'Proxy Alignment' procedures with a compatible scan tool.
8. If the WCM/WIN is not communicating or shows internal faults (like B1A35), test the wiring and connections to the module before condemning it. The module is located behind the ignition switch.
9. If a key is determined to be faulty, a new one must be acquired and programmed to the vehicle using a diagnostic tool.

Parts You'll Likely Need

• Transponder Key Fob — The original key's internal transponder chip has failed or lost its programming.
  Trusted brands: Mopar
  OEM price range: $150-$300
  Aftermarket price range: $50-$150
• Wireless Control Module (WCM) / Sentry Key Immobilizer Module (SKIM) / Wireless Ignition Node (WIN) (OEM #56044672AE (example for early models, verify by VIN)) — This module, which reads the key, is a common failure point. It may need to be repaired or replaced and reprogrammed.
  Trusted brands: Mopar
  OEM price range: $250-$500
  Aftermarket price range: $150-$300 (Repair Service)

Related Codes That Often Appear With This One

• B1A25 — This is a Body Control Module (BCM) code for 'Invalid Key,' which is often stored in the security module (WCM/WIN) at the same time the PCM stores P0513.
• B1A28 — 'ECM Mismatch with SKIM' indicates a security data mismatch between the engine computer and the immobilizer module, often seen with P0513 after a module replacement or low voltage event.
• B1A35 — This code can mean 'Unidentified Key Communication Error' from the Wireless Control Module (WCM/WIN), pointing to a communication breakdown in the security chain, often due to a faulty key or WIN module itself.

Technical Service Bulletins (TSBs) & Recalls

• S2208000073: No Start, After Flash And Or PCM Replace, DTC P0513 Invalid Skim Key Setting. This TSB explains that the code can be set after PCM service and the fix is to run the 'PCM Replaced' procedure to re-sync security information.
• S2225000003: This bulletin notes P0513-Invalid Skim Key setting in the PCM can occur specifically after programming a replacement "generic" PCM.
• S2508000085: Describes an active P0513 Invalid SKIM Key code in the PCM causing a No Crank No Start condition after replacing the BCM.
• 08-007-08 REV. A: This TSB relates to WIN module and FOBIK key issues on various Chrysler/Jeep vehicles of this era, sometimes involving flashing the WIN module or replacement.
• P57 / NHTSA 14V-567: A safety recall was issued for the Wireless Ignition Node (WIN) on some 2008-2010 Commanders due to the potential for the ignition key to inadvertently move from the 'ON' to the 'Accessory' position while driving, causing the engine to stall.

Platform-Specific Known Issues

• The SKIM/WCM module for the Commander has been noted by owners as a part that can be discontinued and difficult to find new, often requiring a repair service or finding a used part.
• The transition from SKIM (2006-2007) to WIN (2008-2010) means diagnosis and parts differ by model year. The WIN module integrates the ignition switch and is a more complex component.

Mechanic-Grade Diagnostic Values

• WCM/WIN Fused B+ Circuit (A412) Voltage — expected: Test light illuminates brightly (approximately 12V). Failure: Test light does not illuminate, indicating an open or short in the circuit.
• WCM/WIN Ground Circuit (Z914) Integrity — expected: Test light connected to 12V illuminates brightly when probing the ground circuit.. Failure: Test light does not illuminate, indicating an open ground circuit.
• WCM/WIN Fused Ignition Switch Output (Run/Start) Circuit (F20) Voltage — expected: Test light illuminates brightly with ignition ON (approximately 12V).. Failure: Test light does not illuminate, indicating an open or short in the circuit from the ignition switch or TIPM.
• CAN C Bus (+) Circuit (D65) Resistance — expected: Below 5.0 ohms. Failure: Resistance above 5.0 ohms indicates an open in the CAN bus wiring between the WCM/WIN and the TIPM.
• WIN Module Internal Antenna Coil Resistance — expected: 10-15 ohms. Failure: An open circuit (infinite resistance) indicates broken solder joints or a failed coil.

Hidden / Shadow Codes Worth Checking

• B2101: Ignition Run/Start Input Low. This code is set in the WCM/WIN module when it detects that the voltage from the ignition switch is below a calibrated threshold. This can be caused by a faulty ignition switch or wiring issues and can lead to a P0513. (see via A professional scan tool capable of reading Body/Security module codes, such as wiTECH or Autel/Snap-on scanners with Chrysler-specific software.)

Scan Tool Commands That Help

• wiTECH, AlfaOBD, Appcar DiagFCA: PCM Replaced — This routine is mandatory after replacing or flashing the PCM. It re-establishes the security handshake between the PCM and the WCM/WIN. Failure to perform this is a primary cause of P0513 after PCM service, as noted in TSB S2208000073.
• wiTECH, AlfaOBD, Appcar DiagFCA: Proxy Configuration Alignment — This function synchronizes the configuration data across all modules on the CAN bus. It should be performed after replacing any major module (like the WCM/WIN, BCM, or TIPM) or if the odometer is flashing, which indicates a module mismatch.
• wiTECH, AlfaOBD, Appcar DiagFCA: WIN/WCM Replaced — This function is used to initialize a new, blank WIN or WCM module to the vehicle. It writes the vehicle's VIN and security information to the new module, allowing it to communicate with the PCM and BCM.

Wiring & Ground Locations

• WCM/WIN Connector — The module is located directly behind the ignition switch, under the steering column shroud.. This is the central connection point for all power, ground, and communication lines essential for the immobilizer system. Verifying pin integrity here is a key diagnostic step.
• (A412) Fused B(+) Circuit — A red/dark blue wire at the WCM/WIN connector.. This is the constant battery power supply to the module. Loss of this power will cause the module to be completely unresponsive.
• (Z914) Ground Circuit — A black wire at the WCM/WIN connector.. This is the primary ground for the module. A poor ground connection can cause intermittent and unpredictable immobilizer faults, including P0513.
• (F20) Fused Ignition Switch Output (Run/Start) — A wire at the WCM/WIN connector that receives power from Fuse 46 in the TIPM.. This circuit signals to the WCM/WIN that the key is in the 'On' or 'Start' position. If this signal is missing, the module won't attempt to read the key.
• (D65) & (D64) CAN C Bus Circuits — A twisted pair of wires (typically White/Light Green and White/Light Blue for 2008-2010 models) at the WCM/WIN connector.. This is the communication network link between the WCM/WIN, PCM, and other modules. A break or short in these wires will prevent the security 'handshake' and set P0513.

Real Owner Repair Stories

• Reddit user @beardpain on r/MechanicAdvice (2009 Jeep Liberty (shares similar Chrysler electronics)) — Used aftermarket remote start, then car would not start with key. Clicking noise, no turnover. P0513 code present.
  ❌ Tried (didn't work) Resetting the key by leaving it in the ON position., Assuming the issue was a complex conflict between the remote starter and the factory immobilizer.
  ✅ What actually fixed it The root cause was a dead main vehicle battery. Replacing the battery resolved all symptoms and the P0513 code.
• User 'Mister H' on jeepclub.co.uk forum (2008 Jeep Grand Cherokee WK (platform mate to Commander)) — Completely 'dead' vehicle, key fob would not turn in the WIN module, no power to any systems.
  ❌ Tried (didn't work) Considering a full WIN module replacement from the dealer.
  ✅ What actually fixed it The user disassembled the WIN module and found the two thin wires for the internal antenna coil had broken off the circuit board. He re-soldered the two pins, re-tested the coil resistance (which was then 10-15 ohms), and reinstalled the module. This fixed the problem completely, saving hundreds of dollars.
• NHTSA ODI #11684770 — An owner reported the vehicle shut off and displayed a red immobilizer warning; scans showed P0513, BCM memory faults (B22A9), and CAN-C bus errors. Despite a dealer replacing the PCM for approximately $1,550, the vehicle remained inoperable.

"I Checked Everything" — The Actual Cause

• In one documented case for a similar Jeep platform, a P0513 code accompanied by a no-crank condition was diagnosed. The owner suspected a complex immobilizer or aftermarket remote start failure. The actual cause was simply a dead main vehicle battery. A low voltage state can prevent the security modules from communicating correctly, triggering P0513, but the root cause is insufficient power, not a faulty component.

OEM Part Supersession History

• Multiple, e.g., 5026298AD, 5026366AK, 68064790AC → 68210151AB — Part consolidation and potential design revisions over time.
  Heads up: Using an incorrect part number, even if it physically fits, can lead to programming failures or non-functional remote start/keyless entry features. Always verify compatibility by VIN.
• 68105738AD → 68105738AF — Revision of the part by the manufacturer.

Model Year Variations Within This Range

• 2006-2007: These models use a Sentry Key Immobilizer Module (SKIM) that is separate from the ignition cylinder. It communicates with an antenna ring placed around the lock cylinder. A failure can be the module or just the antenna ring.
• 2008-2010: These models use an integrated Wireless Ignition Node (WIN). This single unit contains the ignition switch, antenna, and security module. Failures are more common in this integrated unit, and repair often involves replacing the entire assembly. The 'key won't turn' symptom is specific to WIN module failure.
• 2009: The optional 5.7L HEMI V8 engine received a power increase to 357 hp and added variable valve timing.
• 2010: The 4.7L V8 engine option was discontinued for the final model year.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• Leaking Sunroof Drain Tubes 🔴 High — Very common across all model years. Clogged or detached drain tubes cause water to leak into the headliner, A-pillars, and onto the floor, potentially damaging electronics. (Ref: Subject of a class-action lawsuit, but no specific recall. TSBs exist for other Jeep models with similar issues.)
• Electronic Throttle Body (ETB) Failure 🟠 Medium — Commonly reported, causing the 'red lightning bolt' Electronic Throttle Control warning light, rough idle, stalling, or limp mode.
• Broken Exhaust Manifold Bolts 🟠 Medium — Prevalent on both the 3.7L V6 and 4.7L V8 engines. The bolts break, causing an exhaust leak with a characteristic 'ticking' sound, especially when cold.
• Service 4WD System Warning Light 🟡 Low — Many owners report the 'Service 4WD System' light illuminates without any actual faults being stored in the Final Drive Control Module (FDCM), often requiring a software update or module reset.
• Delayed Transmission Engagement 🟠 Medium — Some owners experience a delay in engagement when shifting from Park to Drive or Reverse, particularly on vehicles with the 42RLE or 545RFE transmission.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: A used WCM/WIN module is almost NEVER a good choice. These modules are VIN-locked to the original vehicle. Installing a used module will not work without specialized, expensive tools to 're-virginize' or wipe the EEPROM chip, a service not offered by dealerships. The only time it makes sense is if you are buying a complete set (PCM, WIN, and all matching keys) from the exact same donor vehicle, which is often impractical.

Donor-vehicle mileage cap: roughly under 80000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Verify the part number exactly matches your original or its supersession.
• If possible, confirm the donor vehicle did not have electrical or water damage.
• For a SKIM system (2006-2007), ensure the antenna ring and its connector are not cracked or damaged.

OEM-only on this vehicle (don't cheap out):

• Wireless Ignition Node (WIN) / Sentry Key Immobilizer Module (SKIM)

Aftermarket brands forum-validated for this vehicle:

• Circuit Board Medics (Repair Service)
• Flagship One (Repair Service)
• All Computer Resources (Pre-programmed replacement)

Brands owners have reported issues with on this vehicle:

• Unbranded, 'plug-and-play' modules from online marketplaces that do not explicitly offer VIN programming prior to shipment. These are often just used modules that will not work.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• B1A35 — An internal fault code for the WCM/WIN module often seen alongside P0513 when the module fails to recognize any keys.
• B1A25 — Often associated with invalid key or transponder communication issues within the SKIM/WIN system.
• U0168 — Lost communication with the Vehicle Security Control Module (WCM/SKIM), which can prevent the security handshake required to clear P0513.
• P0633 — SKIM Key Not Programmed in PCM; frequently appears with P0513 after a PCM replacement or flash as described in TSB S2208000073.

Frequently Asked Questions