Chassis, generic

C0597 Brake System Control Module A Performance

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C0597 is a summary code for the first brake system control module: it cannot carry out its function properly, and the failure type byte narrows the cause. Toyota uses C059746 (calibration or parameter memory) on 2020–22 Corolla, Corolla Cross and RAV4 with a parking brake warning, cured by reprogramming the skid control unit (T-SB-0078-21), and C059704 (internal failure) on the 2022–23 Tundra, covered by a software campaign. Stellantis asks for current software before an ABS module and booster are replaced for C0597-00 on the 2021–22 Grand Cherokee and 4xe. On 2026 GM full-size SUVs C0597 replaced C055F: a Service Brake System message led to a new master cylinder (PIT6450A), and cold-weather cases trace to weak battery voltage (PIT6476).

Likely causes

Outdated or corrupted brake module software or calibration data
Low battery voltage or poor power and ground connections, especially in cold
Internal fault of the brake control unit or integrated master cylinder

Symptoms

  • Service Brake System or parking brake malfunction message
  • ABS, stability control and possibly check engine lamps on
  • Changed brake pedal effort

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–3,000
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

bscm abrake system control module

Related codes

C0598C055FC0563C0599

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.