← View Generic P0846 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

P0846: P0846: Transmission Control Module (TCM) Range/Performance Issue

on 2018 BMW X5

Fix Cost
$200 - $1000
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2018 BMW
X5
⚠️

Important for 2018 BMW X5 Owners

Before starting repairs, verify which engine your 2018 BMW X5 has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does P0846 Mean on 2018 BMW X5?

The Transmission Control Module (TCM) has detected an issue with the transmission's range and performance, indicating a problem with the transmission's ability to shift gears properly.
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Symptoms

  • • Transmission slipping
  • • hesitation
  • • or difficulty shifting gears
  • • unusual noises
  • • or the transmission warning light illuminated on the dashboard.
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Common Causes

  • • Faulty transmission solenoids
  • • clogged transmission filter
  • • low transmission fluid level
  • • faulty transmission pressure sensor
  • • or a problem with the transmission control module itself.
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How to Fix P0846 on 2018 BMW X5

1. Check and top off transmission fluid level. 2. Inspect and clean or replace the transmission filter. 3. Test and replace faulty transmission solenoids. 4. Check and replace the transmission pressure sensor. 5. Update or replace the transmission control module if necessary.

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Need Maintenance Info for Your X5?

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Parts for 2018 BMW X5

Transmission solenoids Shop ↗ Transmission filter Shop ↗ Transmission fluid Shop ↗ Transmission pressure sensor Shop ↗ Transmission control module Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0846

P0844 Sequential Code

P0844: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0845 Sequential Code

P0845: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0847 Sequential Code

P0847: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0848 Sequential Code

P0848: Transmission Control Module (TCM) Range/Performance Issue

Medium

💡 Why These Codes Are Related:

  • • Similar Issues: Same root cause or component failure
  • • Related Problems: Often occur together due to system interactions
  • • Sequential Codes: Progressive failure stages or multiple sensors
  • • Same System: Components within the same automotive system