According to Au7o's analysis of 170+ owner reports, the 2021 Jeep Grand Cherokee L has 3 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is eTorque Mild Hybrid 48V Battery and Stop/Start Malfunction with 170 owner reports. Across all issues, repair costs range from $ to $1,200. DIY maintenance guides at au7o.io.
On the 2021-2024 Jeep Grand Cherokee L, the Grand Cherokee L's eTorque mild hybrid system experiences 48V battery faults and stop/start malfunctions. The auxiliary battery loses charge capacity, causing the stop/start system to disable itself and triggering warning messages. The belt-starter-generator can also produce vibration during engine restarts.
Common Symptoms
Stop/Start system disabled message
ESS unavailable warning
Rough engine restart at stop lights
48V battery warning
Reduced fuel economy
Belt chirp on engine restart
How to Fix
A dealer software update recalibrates the battery management system. If the 48V battery has degraded, it must be replaced (dealer-only part). Ensure the 12V auxiliary battery is also in good condition as a weak 12V battery stresses the eTorque system.
What Owners Are Using
Parts and tips from 170+ owners who fixed this issue
TipKeep both the 48V and 12V batteries healthy — a weak 12V battery causes the eTorque system to overwork and fail prematurely
UpgradeHigh-performance AGM battery with excellent cold cranking amps and deep cycle capability (Optima RedTop AGM Battery)
Medium Confidence170 reportsLast reported by owners Mar 2026Reviewed Mar 2026
On the 2021-2026 Jeep Grand Cherokee L, the Uconnect 5 system in the Grand Cherokee L experiences frequent freezing, touchscreen lag, wireless CarPlay/Android Auto disconnections, and occasional black screen events requiring a hard reset.
Common Symptoms
Touchscreen freezing
Black screen
CarPlay/Android Auto disconnecting
Slow response to inputs
Backup camera delay
How to Fix
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
Medium Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
On the 2021-2025 Jeep Grand Cherokee L, the Grand Cherokee L with the dual-pane panoramic sunroof is prone to water leaks caused by clogged or kinked drain tubes. The extended-length L model has longer drain tube runs than the standard Grand Cherokee, increasing the likelihood of blockage. Water pools in the sunroof channel and overflows into the headliner, dripping onto the front seats, center console electronics, and overhead console modules. The rear drain tubes are especially prone to clogging where they pass through the C-pillar.
Overhead console lights or controls malfunctioning
How to Fix
Clear all four sunroof drain tubes using compressed air blown from the top opening — do NOT use a wire, which can puncture the tubes. Check that the drain tube exits under the vehicle are clear of debris. If water has already entered the headliner, pull it back to dry the insulation and check for mold. Inspect the overhead console module and ambient lighting connectors for corrosion. Stellantis has issued a TSB with revised drain tube routing for 2021-2022 models.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
High Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date
⚠️NHTSA Recalls6 recalls
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE
Chrysler (FCA US, LLC) is recalling certain 2022-2026 Jeep Grand Cherokee and 2023-2025 Jeep Grand Cherokee L vehicles. A software error in the occupant restraint controller module may cause the delayed deployment of the side air bags during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 214, "Side Impact Protection."
Campaign #26V32800021/05/2026
AIR BAGS:SIDE/WINDOW
Chrysler (FCA US, LLC) is recalling certain 2022-2024 Jeep Grand Cherokee and 2021-2024 Jeep Grand Cherokee L vehicles. An improperly secured connector for the front seat side air bags (SAB) may prevent the air bags from deploying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 214, "Side Impact Protection."
Chrysler (FCA US, LLC) is recalling certain 2023 Jeep Grand Cherokee and Jeep Grand Cherokee L vehicles. The blower motor may fail, which can cause the defrosting and defogging system to be inoperative. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 103, "Windshield Defrosting and Defogging Systems."
Campaign #25V43000026/06/2025
SEATS:MID/REAR ASSEMBLY:HEAD RESTRAINT
Chrysler (FCA US, LLC) is recalling certain 2023-2024 Jeep Grand Cherokee and Jeep Grand Cherokee L vehicles. The second-row seat head restraints may not lock in the upright position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 202, "Head Restraints."
Campaign #25V47200017/07/2025
SUSPENSION:REAR:SPRINGS:COIL SPRINGS
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Grand Cherokee L and 2022-2023 Jeep Grand Cherokee vehicles. The rear coil springs may be incorrectly installed and detach from the vehicle while driving.
What are the most common Jeep Grand Cherokee L problems?
According to Au7o's analysis of 170+ owner reports, the 2021-2021 Jeep Grand Cherokee L has 3 documented issues. The most frequently reported are: eTorque Mild Hybrid 48V Battery and Stop/Start Malfunction, Panoramic Sunroof Drain Blockage and Water Leak, Uconnect 5 Infotainment Freezing and Lag. None are rated critical, but regular maintenance is recommended.
Is the Jeep Grand Cherokee L reliable?
The 2021-2021 Jeep Grand Cherokee L has 3 known issues documented across 170+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Jeep Grand Cherokee L problems?
Repair costs for known Jeep Grand Cherokee L issues range from $0 to $1,200, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2021-2024 Jeep Grand Cherokee L eTorque Mild Hybrid 48V Battery and Stop/Start Malfunction?
The Grand Cherokee L's eTorque mild hybrid system experiences 48V battery faults and stop/start malfunctions. The auxiliary battery loses charge capacity, causing the stop/start system to disable itself and triggering warning messages. The belt-starter-generator can also produce… Repairs typically run $0-$1,200. Severity: medium.
What is the 2021-2025 Jeep Grand Cherokee L Panoramic Sunroof Drain Blockage and Water Leak?
The Grand Cherokee L with the dual-pane panoramic sunroof is prone to water leaks caused by clogged or kinked drain tubes. The extended-length L model has longer drain tube runs than the standard Grand Cherokee, increasing the likelihood of blockage. Water pools in the sunroof ch… Repairs typically run $0-$800. Severity: medium.
What is the 2021-2026 Jeep Grand Cherokee L Uconnect 5 Infotainment Freezing and Lag?
The Uconnect 5 system in the Grand Cherokee L experiences frequent freezing, touchscreen lag, wireless CarPlay/Android Auto disconnections, and occasional black screen events requiring a hard reset. Repairs typically run $0-$200. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
