Where is the turn signal flasher located on Sinotruk Howo?
3 Answers
Sinotruk Howo turn signal flasher is located behind the emergency switch. Additional information is as follows: 1. Introduction: The automotive turn signal electronic flasher is a flashing device used to indicate changes in the vehicle's direction of travel. It features a new circuit design, consisting of a low-voltage switch circuit, high-voltage switch circuit, pulse generation circuit, two-stage amplification dual-transistor output circuit, and two sets of light indicator circuits. Installed within the flasher housing, it accurately indicates the vehicle's direction through its control. It is particularly characterized by its automatic protection function, automatically stopping the flasher and bulb operation in the event of a short circuit. The driver can visually monitor the flasher's working condition through the fault indicator installed on the flasher, allowing timely detection and resolution of faults. 2. Inspection of the mechanical steering gear: Check for wear and damage on the pinion and rack, and for cracks on the steering gear housing. Note that parts on the steering gear must not be welded or straightened and can only be replaced. Also, inspect the wear and damage of bearings and bushings, as well as the wear and aging of oil seals and dust covers, and replace them promptly.
I often repair this type of truck and know that the flasher unit is usually hidden inside the combination switch assembly under the steering wheel. To be specific, it's located within that black plastic module behind the steering column housing. You can access it by removing the steering wheel cover or prying open the trim panel, but be careful not to break the clips since truck interiors are quite compact. If you can't find it there, it might be hanging out near the fuse box under the driver's seat alongside the relays – that's where I found it last time when repairing a HOWO truck. The flasher controls the turn signal rhythm, and once it fails, the turn signals will stay lit without flashing, which is especially dangerous while driving. So I'd suggest first checking if the fuse is blown – it's a quick and effective troubleshooting step. If that doesn't work, just replace the entire switch assembly. A reliable repair shop won't charge much for this. Remember not to force open components to avoid damaging more wiring.
Speaking of HOWO's flasher relay, I replaced it myself last year. It's located inside the large combination switch panel below the left side of the steering wheel. This component controls the turn signal flash frequency. After removing the plastic cover, you'll see it plugged into a module slot—just a small square box connected with several wires. When replacing, always disconnect the negative battery terminal for safety, then use a Phillips screwdriver to remove the mounting screws. Honestly, the placement is quite service-friendly, but never yank the wires forcefully—a short circuit could have serious consequences. Last time, my friend skipped proper procedures to save time and ended up burning the relay too, costing way more in repairs. Turn signals are used daily while driving; when this part fails, your car moves like a silent ghost—how dangerous! I recommend addressing any flashing abnormalities immediately, don't wait until it causes trouble on the highway.
