A Deep Dive into the 2007-2009 Chrysler Aspen Transmission Filter Kit
Keep your Aspen's automatic transmission healthy by understanding its unique dual-filter system.
- Your Aspen has a 545RFE transmission with two filters (a flat sump filter and a spin-on filter) that must be replaced together.
- Use only Mopar ATF+4 certified transmission fluid to avoid shifting problems and potential damage.
- A sudden failure to move, sometimes with a P0944 code, can be caused by a loose or clogged spin-on filter.
- Quality aftermarket brands like Wix are a reliable alternative to more expensive OEM parts for this service.
Symptoms of a Clogged Transmission Filter in Your Aspen
When a transmission filter gets clogged, it restricts the flow of fluid. This can starve the transmission's internal pump, leading to serious issues. Watch for these warning signs:
- Delayed Shifting: You might notice a long pause after shifting from Park into Drive or Reverse, especially when the vehicle is cold.
- Hesitation or Shuddering: The vehicle may hesitate or shudder as the transmission struggles to change gears smoothly.
- Whining or Noisy Transmission: A whining noise from the transmission area can indicate the pump is working too hard to pull fluid through a clogged filter.
- Limp Mode: In severe cases, the vehicle's computer may put the transmission into "limp mode," locking it in a single gear (usually second or third) to prevent further damage.
- Loss of Drive: A complete loss of movement, where the engine revs but the vehicle won't go into gear, can be caused by a severely clogged or failed filter. This is sometimes linked to a P0944 trouble code for loss of pump prime.
Choosing the Right Aftermarket Filter Kit
Your Aspen's 545RFE transmission has a specific need for two filters. Do not make the common mistake of only changing one. When shopping for an aftermarket kit, quality matters more than brand name alone, but some brands have a better track record.
Aftermarket Brand Tiers
| Tier | Brands | Assessment |
|---|---|---|
| Good | Wix | Wix is a well-respected filter manufacturer with a strong reputation for quality among mechanics and DIYers. Their kits are a reliable alternative to OEM. |
| Standard | ATP, Premium Guard | ATP is a long-standing transmission parts company. Their kits are generally considered acceptable for regular service intervals. Premium Guard is a common budget-friendly option. With these brands, ensure the kit includes both the flat filter and the spin-on filter. |
| Use with Caution | Vaico | Vaico primarily focuses on European vehicles. While they claim OE-quality, some user reviews for other vehicle makes mention shift quality issues after installation, leading them to switch back to an OEM part. Given the specific needs of the 545RFE, sticking with a brand more proven for Chrysler vehicles is a safer bet. |
Pro Tip: OEM vs. Aftermarket Quality
For this specific transmission, a high-quality aftermarket kit (like Wix) is a perfectly good choice and can save you money. The most important thing is that you replace both filters and the pan gasket. Some aftermarket kits include a reusable rubber gasket, which can be easier to work with than the RTV sealant used at the factory.
Known Issues and Technical Service Bulletins (TSBs)
There is a known issue related to the transmission in the Chrysler Aspen. A Technical Service Bulletin (TSB) addresses a problem where the vehicle has a delayed engagement into Drive or Reverse after being parked. This can happen if an older-style cooler return filter was used, which allows fluid to drain back out of the torque converter. Using an updated filter design, whether from Mopar or a quality aftermarket brand, can solve this issue.
Frequently Asked Questions (FAQ)
How often should I change the transmission filters on my Aspen?
Check your owner's manual for the official interval. However, many mechanics recommend a transmission service, including changing both filters and the fluid, every 60,000 to 100,000 miles for preventative maintenance.
Do I really need to change both filters?
Yes. The 545RFE transmission was designed with two filters for a reason. The flat filter is the primary pickup in the pan, and the spin-on filter cleans fluid returning from the cooler. Neglecting the spin-on filter can lead to fluid flow problems and potential transmission failure.
What kind of transmission fluid does my 2007-2009 Aspen need?
Your Aspen requires Mopar ATF+4 Automatic Transmission Fluid. Do not use any other type of fluid. Using the wrong fluid can cause poor shifting and transmission damage.
Can I replace the transmission filter kit myself?
Yes, if you are comfortable with messy jobs and have the right tools. The process involves safely raising the vehicle, draining the fluid by dropping the transmission pan, swapping both filters, cleaning the pan and mating surface, and reinstalling the pan with a new gasket before refilling with the correct amount of ATF+4 fluid. It is a moderately difficult job for a DIYer.
Technical Specifications
OEM Part Numbers: 5013470AE 5179267AD 4799662 5013470AD
Fits 545RFE 5-speed automatic transmission. Kit must include one (1) sump filter (flat) and one (1) cooler return filter (spin-on).
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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.
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