2004-2008 Chrysler Crossfire Ignition Switch: Fixing the Common No-Crank Problem
This guide explains the common failure points of the 2004-2008 Chrysler Crossfire ignition switch, how to diagnose them, and why you don't need to visit the dealer for programming.
- The most common failure is a 'no-crank' condition caused by cracked solder joints inside the switch, which can often be repaired for free with a soldering iron.
- This specific part, the electronic ignition switch module, does NOT require programming. It is a plug-and-play replacement, saving you a trip to the dealer.
- Symptoms can be confused with a bad battery or starter, but a key sign of a failing switch is when dashboard lights work but the engine won't crank.
- Do not confuse this with a SKREEM (immobilizer) failure, which typically allows the engine to start for a second and then die three times in a row.
Known Issues and Common Failure Modes
The most widespread problem with the 2004-2008 Chrysler Crossfire ignition switch is an intermittent or complete failure to start the engine. The typical cause is not the entire switch assembly, but cracked solder joints on the internal circuit board of the electrical switch module that sits at the back of the lock cylinder. Over thousands of heating and cooling cycles, these tiny solder points can develop microscopic cracks, leading to a poor or broken electrical connection.
When this happens, turning the key does nothing—the engine won't crank, but the radio and dashboard lights may still work perfectly. This can be confusing, as it mimics the symptoms of a dead starter or battery. Many owners report that wiggling the key can sometimes temporarily restore the connection and allow the car to start, which is a strong indicator of this specific failure.
Pro Tip: This solder joint issue is so common that many DIY owners choose to repair their original switch instead of replacing it. A local electronics repair shop or a steady hand with a soldering iron can often permanently fix the problem by re-flowing the solder on the circuit board's pins.
Symptoms of a Failing Ignition Switch
A failing ignition switch can be tricky to diagnose because its symptoms often overlap with other common issues like a bad battery, starter, or the anti-theft system (SKREEM module). Here are the most common signs that your ignition switch is the culprit:
- Engine Won't Crank: The most definitive symptom. You turn the key to the 'START' position, all the dashboard lights come on as normal, but the starter motor does not engage. You won't hear a click or any attempt to turn over.
- Intermittent Starting: The car may fail to start randomly, but then work perfectly fine on the next try. This often gets worse over time.
- Stalling While Driving: In less common cases, a faulty connection in the switch can be affected by road vibrations or the weight of a heavy keychain, causing the engine to shut off while in motion.
- Key Is Hard to Turn or Gets Stuck: While this can also be a problem with the mechanical lock cylinder, binding in the electrical switch can make the key difficult to turn through its positions.
- Accessories Don't Work Correctly: The radio, power windows, or climate control may not power on in the 'ACC' or 'ON' positions, or they may cut out intermittently.
Important: Do not confuse an ignition switch failure with a SKREEM (Sentry Key Remote Entry Module) failure. A bad SKREEM module will typically allow the engine to crank, start for 1-2 seconds, and then immediately stall. This will happen three times in a row, after which the starter will be disabled until the battery is disconnected to reset the system. A bad ignition switch usually results in a complete no-crank condition from the start.
Buying a Used Ignition Switch: What to Look For
For the Chrysler Crossfire, a used OEM ignition switch is an excellent and cost-effective repair option, especially since the failure is electronic and not mechanical wear. Here’s what you need to know:
- Verify You're Buying the Right Part: You need the black, plastic electronic switch module that attaches to the back of the metal ignition lock housing. You do NOT need the lock cylinder or new keys. You will reuse your existing key, lock cylinder, and immobilizer antenna ring.
- Part Number is Key: Match the part number exactly. The most current Mopar part number is 68001655AB, which supersedes older numbers like 68001655AA and 5098712AA. A used part with any of these numbers should work.
- Physical Inspection: Check the plastic housing for any signs of melting, cracking, or heat stress. Look at the connector pins to ensure they are straight and free of corrosion. Avoid any parts that look like they have been tampered with or poorly repaired.
- Why Used OEM is a Smart Choice: The original Mopar/Mercedes parts have a known failure mode (solder joints) that is easily repairable. A good-condition used OEM part is often more reliable than a new, cheap aftermarket switch made with lower-quality internal components that may fail unpredictably.
Programming and Installation
Does the ignition switch need to be programmed?
No. The electronic ignition switch module itself does not contain any vehicle-specific security information and does not need to be programmed. The security data is stored in the key's transponder chip and the separate SKREEM (immobilizer) module. As long as you are only replacing the electrical switch and reusing your original key and lock cylinder, the car's anti-theft system will not be affected. This makes it a plug-and-play repair that does not require a dealer visit.
Replacement Walkthrough
Replacing the ignition switch is a manageable DIY job for those comfortable working under the dashboard. The process generally takes 1-2 hours.
- Disconnect the Battery: Always disconnect the negative battery terminal before working on any electrical components.
- Remove Lower Dash Panels: You will need to remove the plastic trim panel below the steering column to gain access.
- Remove the Lock Cylinder Assembly: This is often the trickiest part. You'll need to turn the key to position '1', then use a tool (a bent paperclip or small pick often works) to depress a release tab to pull the lock cylinder out of the housing.
- Unplug and Replace the Switch: Once the lock cylinder is out, you can access the electrical switch. It is typically held in place by a retaining collar or small screws. Disconnect the electrical connector, remove the old switch, and install the new one in its place.
- Reassembly: Re-install the lock cylinder, connect the battery, and test for proper function before putting all the trim panels back on.
Cost to Replace a 2004-2008 Crossfire Ignition Switch
| Part or Service | Estimated Cost |
|---|---|
| New OEM (Mopar) | $100 - $150 |
| New Aftermarket | $30 - $70 |
| Used OEM | $25 - $75 |
| Shop Labor | $160 - $240 |
| Total Professional Repair (New OEM Part) | $290 - $370 |
Frequently Asked Questions (FAQ)
Will a Mercedes SLK R170 ignition switch fit my Crossfire?
Yes, in many cases it will. The Crossfire is mechanically based on the first-generation Mercedes SLK (R170 chassis). However, to guarantee compatibility, you must match the OEM part number on the switch itself. Do not rely on visual similarity alone.
My car cranks but won't start. Is it the ignition switch?
It's less likely. A 'crank, no start' condition is more often caused by a fuel delivery issue (fuel pump, filter), a spark issue (crankshaft position sensor), or an anti-theft system fault (SKREEM module). A bad ignition switch typically results in a 'no crank, no start' situation.
Can I just repair my old ignition switch?
Yes. If the failure is due to the common cracked solder joints, it is a very common and effective DIY repair. There are numerous guides and videos online showing how to open the switch housing and re-solder the three main pins on the circuit board. This can be a permanent fix that costs nothing but a little time and solder.
My key is stuck in the ignition. Is this the same problem?
It can be related, but a stuck key is often a mechanical issue with the lock cylinder itself or the steering lock mechanism, not the electrical switch. Sometimes, a problem in the electrical switch can prevent the lock cylinder from rotating fully to the 'OFF' position where the key can be removed. A common fix for a sticky key involves disassembling and cleaning the lock mechanism.
Technical Specifications
OEM Part Numbers: 68001655AB 68001655AA 5098712AA 5101710AA 05098721AA
This is the electronic switch module that attaches to the rear of the ignition lock cylinder housing. It is not the lock cylinder or the complete housing assembly.
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chrysler Crossfire:
- Known Issues and Common Failure Modes
- Symptoms of a Failing Ignition Switch
- Buying a Used Ignition Switch: What to Look For
- Programming and Installation
- Does the ignition switch need to be programmed?
- Replacement Walkthrough
- Cost to Replace a 2004-2008 Crossfire Ignition Switch
- Frequently Asked Questions (FAQ)
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