2018 Ram 4500 Service and Repair Manual

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Factory-Grade Data

2018 Ram 4500 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Tradesman Cab & Chassis 4-Door
  • Base Cab & Chassis - Conventional 2-Door
  • SLT Cab & Chassis 2-Door
  • Laramie Cab & Chassis 4-Door
  • Base Cab & Chassis - Crew Cab
  • SLT Cab & Chassis 4-Door
  • Tradesman Cab & Chassis 2-Door
  • Base Cab & Chassis - Conventional

Engines covered

  • 6.7L 408Cu. In. l6 DIESEL Turbocharged
  • 6.4L 6424CC 392Cu. In. V8 GAS OHV Naturally Aspirated
  • 6.7L 408Cu. In. l6 DIESEL OHV Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2018 Ram 4500 Recalls & Complaints

NHTSA #19V23600026/03/2019Component: EXTERIOR LIGHTING:BRAKE LIGHTS

Excellance, Inc. (Excellance) is recalling certain 2018 Ambulances and Emergency Vehicles built on Ford E-350, E-450, F-650, F-550 4x4, Chevrolet G4500, G4500 Diesel, C3500, G3500, Freightliner M2, In

Consequence

If the brake lights incorrectly illuminate, it can confuse other drivers, possibly increasing the ri

Remedy

Excellance has notified owners, instructing them to contact Whelen to have the brake lights replaced

TSB #11032344

Squeak Or Squawk Noise Coming From Either Side Door Of The Vehicle, It Could Be Just One Door Or More. The Noise Can Be Present In Either The Upper Or The Lower Hinge.

TSB #11031241

Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.

TSB #11030026

SPEAKER - NONE

TSB #11030025

SPEAKER - NONE

TSB #11027838

Seatbelt Slow Retraction.

TSB #11022027

Verify Reman part number availability. Order the "R" part number for all orders: Warranty, Mopar, customer pay and service contract. Order "68" part number for New unsold units only.

TSB #11021585

LAMP - DOME

TSB #11019776

LAMP - DOME

Showing the 8 most recent of 363 technical service bulletins on file with NHTSA.

20260120Component: SERVICE BRAKES, HYDRAULIC

The contact owns a 2018 Ram 4500. The contact received notification of NHTSA Campaign Number: 24V896000 (SERVICE BRAKES, HYDRAULIC). However, the part to do the recall repair was not yet available. Th

20260113Component: SERVICE BRAKES, HYDRAULIC

The contact owns a 2018 Ram 4500. The contact received notification of NHTSA Campaign Number: 24V896000 (SERVICE BRAKES, HYDRAULIC). However, the part to do the recall repair was not yet available. Th

20260107Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Nov 27,2024 Manufacturer Recall NumberC4B NHTSA Recall Number24V-896 Recall Status Recall Incomplete, remedy not yet available Still no repair for defective parts. Over years.

20260107Component: SERVICE BRAKES

Nov 27,2024 Manufacturer Recall NumberC4B NHTSA Recall Number24V-896 Recall Status Recall Incomplete, remedy not yet available Still no repair for defective parts. Over years.

20251030Component: STEERING

See attached document for complaint.

Showing the 5 most serious of 13 complaints filed with NHTSA.

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