2018–2020 Frontline Type I, Liquid Spring DS135RS3-DM, Liquid Spring DS135RS3A and 5 other models Recall: Rear brake caliper flexible line may have been routed so that it contacts…
NHTSA campaign 20V284000 · Service Brakes · filed May 20, 2020 · verified Jul 30, 2026
The defect
REV Ambulance Group Orlando, Inc. (REV) is recalling certain 2018-2020 Type 1 ambulances built on Ram 4500 and 5500 chassis equipped with Compressible Liquid Adaptive Suspension Systems (C.L.A.S.S.), part numbers DS135RS3A, DS135RS3AF and DS135RS3-DM. The rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes.
The risk
A worn rear brake caliper flexible line may cause brake fluid leakage which may result in a partial or complete loss of the rear brakes, increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
REV will notify owners, and dealers will dealers inspect the rear brake caliper flexible lines for wear and install a kit to modify the rear brake caliper flexible line mounting, and if necessary, a kit to replace worn brake lines, free of charge. The recall began July 15, 2020. Owners may contact REV customer service at 1-855-661-9232.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Frontline Type I recalls
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- 2017 Frontline Type I and 4 other models — Due to an incorrect torque specification, the rear brake…
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Other campaigns involving Frontline vehicles
Source: NHTSA recall database, campaign 20V284000. Data last verified Jul 30, 2026.