The defect
Navistar, Inc. (Navistar) is recalling certain 2019 IC Bus CE school buses equipped with feature code 04091 (dual air brake system) and 04AZS (Antilock Brake System (ABS) with 4 channel Electronic Stability Protection (ESP)). The air supply line to the SR7 roll stability valve may have been improperly routed to the ATR6 brake control valve steer axle delivery port, when it should be connected to the ATR6 brake control valve control port.
The risk
During a stability control oversteer event when there are slippery road conditions, the parking brakes may be modulated unintentionally, potentially causing a loss of control and increasing the risk of a crash.
The remedy
Navistar will notify owners, and dealers will reroute the SR7 roll stability valve supply line to the ATR6 brake control valve control port, free of charge. The recall began on June 12, 2018. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 18506.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| IC Bus Cesb | 2019 |
Components: ELECTRONIC STABILITY CONTROL (ESC) | SERVICE BRAKES, AIR
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| IC Bus Cesb | 2019 | 0 | 16 |
Other electronic stability control (esc) recalls in 2018
4 of the 912 recall campaigns reported to NHTSA in 2018 concerned the electronic stability control (esc); Navistar, Inc. filed 183 campaigns in all.
| 18V489000 20 Jul 2018 | Braun Corporation |
| 18V289000 3 May 2018 | Navistar, Inc. |
| 18V122000 20 Feb 2018 | Toyota Motor Engineering & Manufacturing |
NHTSA recalls (public domain) · all recalls of 2018