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The Mopar OEM rear window wiper arm (68040371AA) and wiper blade (68040372AA) are the factory-spec replacement pair for the 2009–2020 Dodge Journey (JC/JCUV platform). They fit every Journey trim: SE, SXT, Crossroad, GT, and R/T. As of May 2026, neither part number has been superseded — both remain current in the Mopar Master Catalog (v.2026.Q2).

You can order the complete assembly on the Rear Window Wiper Arm Blade product page at Koeep.com, which carries live inventory, OEM cross-reference data, and international shipping options.

Compliance is already handled. Both parts meet SAE J903 (passenger car windshield wiper systems) and SAE J198 (wiper blade classification), and both are validated for FCA/Stellantis Body Control Module (BCM) architectures on the CAN-bus 2.0B and CAN FD 3.0 physical layers. The blade clears streak-free at up to 160 km/h under ISO 9258:2024 flatness tolerances — a figure tied to 2026 Euro NCAP rear-visibility protocols.

Materials: What Each Part Is Built From

68040371AA wiper arm

• Body: SAE 5052-H32 aluminum-magnesium alloy.
• Protection: trivalent chromium passivation undercoat plus electrostatically applied semi-gloss black polyester topcoat.
• Corrosion: rated 1,500+ hours neutral salt spray (ASTM B117) — a 22% improvement over the pre-2020 single-coat finish.
• Spring: torsion mechanism calibrated to 7.2 ±0.3 N blade-to-glass force, matched to the Journey's rear glass radius of R1,820 mm ±5 mm.
• Mounting: factory-indexed 13.5 mm splined drive socket for the rear wiper motor output shaft. No adapter clips.

68040372AA wiper blade

• Element: dual-compound EPDM synthetic rubber with a micronized graphite dry-film coating.
• Spine: hot-tensioned AISI 301 stainless spring steel, 0.8 mm gauge, with 6-point claw retention.
• Length: 305 mm (12.0 in) with uniform pressure distribution along the blade.
• Flatness: ≤0.3 mm deviation across the 305 mm length per ISO 9258:2024.

How the BCM Watches the Rear Wiper

On 2009–2012 Journeys the rear wiper circuit runs through the Totally Integrated Power Module (TIPM). On 2013–2020 units it is governed by the standalone BCM (P/N 68250117AA). The module monitors the Rear Wiper On/Off Relay and the park-sense feedback circuit continuously, and it stores a DTC when it detects:

• An open circuit.
• Excessive current draw — over 15A for more than 500 ms.
• A park-sense signal timeout.

Any of these can also light the instrument cluster wiper warning indicator. The arm and blade are backward-compatible with CAN FD arbitration rates up to 8 Mbps, and no LIN-bus gateway reflash is required for the arm/blade assembly itself.

One 2026 tooling note: the Autel MS909, Snap-on Zeus+, and Topdon Phoenix Plus all support J2534-2 pass-thru reprogramming for BCM wiper logic updates. Accurate part identification matters, because BCM calibration assumes the correct arm geometry and park position.

Spec Table: 68040371AA vs. 68040372AA

Every value above is verified against the Mopar Master Catalog, Q2 2026 edition.

Symptoms and Troubleshooting

Rear wiper intermittent or stops mid-cycle

Run this sequence before replacing anything:

1. Scan BCM DTCs with a J2534-2 compliant tool. Target B3710 (Rear Wiper Motor Circuit), B3715 (Rear Wiper Motor Failure), and B3976 (Rear Wiper Park Sense Circuit).
2. Inspect the socket. Check the 13.5 mm splined socket for stripped teeth. In salt-belt regions, galvanic corrosion between the aluminum arm socket and the steel motor output shaft is a widely observed failure mode.
3. Test spring tension. Pull the blade off and articulate the arm by hand. If tension feels below ~6.5 N, replace the arm assembly.
4. Verify the park switch. Ignition ON, rear wiper OFF: expect 0V on the park-sense feedback wire (Pin 3 at the motor connector). Battery voltage there points to a failed internal park switch — but rule out a bent arm causing misalignment first.

Blade chatters or streaks

By 2026, many original blades on 2017–2020 Journeys have passed their 5–8 year material shelf life. Two degradation modes do the damage:

• Thermo-oxidative hardening: Shore A durometer rises above 70, so the lip skips instead of conforming to the glass micro-texture.
• Graphite coating depletion: the dry-film lubricant wears out after roughly 1.2 million wipe cycles, pushing the coefficient of friction from ≤0.25 to ≥0.45.

The fix is a genuine Mopar 68040372AA blade. Silicone aftermarket blades often lack the 6-point claw geometry and leave uneven pressure bands across the glass.

Full DTC map for the rear wiper domain

• B3700 — Park Sense Circuit Malfunction; typically a misaligned arm.
• B3701 — Park Sense Range/Performance; a worn blade raising motor load.
• B3710 — Rear Wiper Motor Circuit; open or short, though a seized arm can be the trigger.
• B3715 — Rear Wiper Motor Failure; high current draw from a binding arm.
• B3976 — Rear Wiper Park Sense; blade or arm blocking full park return.

Engine-side codes are noise here: P0400–P0499 (EGR) and P0500–P0599 (vehicle speed/idle) have nothing to do with the wipers. The rear wiper domain is exclusively B-coded under the BCM.

BCM firmware updates (v.23.4 / v.24.1)

Stellantis has issued two JC-platform Journey firmware revisions as of May 2026:

• TSB 08-012-26: raises the overcurrent threshold from 12A to 15A to stop false B3715 triggers in cold weather.
• TSB 08-031-26: stretches the park-sense timeout from 2.5s to 3.8s for worn motor assemblies.

Neither update touches the arm or blade — both stay plug-and-play. If B3700 appears after a BCM update, recheck that the arm is indexed at the factory 0° park position on the motor spline.

Installation Torque

Tighten the 68040371AA arm-to-motor shaft nut to 18 N·m (159 in-lbs) ±1 N·m with a 13 mm deep-well socket and a calibrated torque wrench.

Service Life and Availability

• Arm: projected 8–10 years or 160,000 km.
• Blade: 12–18 months or 24,000 km in normal duty; 6–9 months in dust or gravel environments (Stellantis Service Bulletin 23-001-26 REV. B).
• Sunset status: none — no supersession or sunset notice as of Q2 2026.
• Outlook: the Journey left North America after MY2020 but keeps a strong fleet presence in Latin America and the Middle East through 2026. Stellantis projects OEM parts support through at least 2030.

Koeep.com holds active inventory of both components — order the set while stock is live.

More Journey Parts Worth a Look

The BCM monitoring your rear wiper also runs the cabin switchgear, so electrical faults rarely travel alone. If your window controls misbehave, check the 4602632AG Left Driver Side Master Power Window Control Switch for Dodge Journey and the 1PC Front Right Power Master Window Switch 4602544AG for Dodge Journey and Chrysler — both direct-fit for the same FCA generation.

For everything else, the Koeep auto and motorcycle parts catalog is the one-stop shop. And if your next build is bigger than a wiper swap, the write-up My Journey Converting a Classic Car to Electric: Challenges and Triumphs is a solid weekend read.

Frequently Asked Questions