What is the reason for half of the daytime running lights not working on the ninth-and-a-half-generation Accord?
3 Answers
It is due to a malfunction in the LED lights. If the daytime running lights fail within the warranty period, you can get them repaired for free at a 4S dealership. Below are specific details about the Honda Accord: Introduction: The Accord (Accord) embodies Honda's innovative spirit and global-leading technology, with a 38-year history worldwide. The original tires equipped on the Accord are Michelin ultra-high-performance sports tires. On April 16, 2018, the all-new generation of the Honda Accord, also known as the tenth-generation Honda Accord, was officially launched in China. Market Positioning: A leading model in China's mid-to-high-end car segment, setting a new technological benchmark in the mid-to-high-end car market.
I usually enjoy studying cars and have seen many cases where one side of the daytime running lights (DRLs) on an Accord doesn't work. Let's start with the most common issue: a few LED chips in the light module have burned out. These strip-style DRLs consist of multiple small LED chips connected in series, so if one fails, it affects a section. Another frequent cause is a loose connector, especially for vehicles frequently driven on rough roads or with modified wiring—poor contact in the plug can lead to partial failure. Additionally, a faulty driver module could be the culprit. For example, if the lighting control module in the 9.5th-generation models malfunctions, it may cause voltage instability and burn out the LEDs. Poorly sealed waterproof adhesive can also cause a short circuit, particularly noticeable after car washes. My suggestion is to first visit a repair shop to scan for trouble codes with a diagnostic tool. They can use a multimeter to test the circuit and determine whether it's a bulb issue or something else.
Last time, my friend's ninth-and-a-half-generation Accord encountered the exact same issue—the right-side daytime running light suddenly went out. When we took it to the repair shop and disassembled the headlight assembly, we found several LED bulbs inside had turned black. The mechanic said these integrated light strips are particularly prone to problems, mainly due to poor heat dissipation causing localized overheating. Later, we replaced it with an aftermarket light strip for over 500 yuan; an original part would have cost around a thousand. He mentioned that the most common issue in such cases is internal damage to the light unit, followed by oxidation or loosening of the wiring harness connectors. During the inspection, we indeed noticed some green corrosion on the white connector. So, if you encounter a situation where half the light isn’t working, don’t delay—address it early to prevent short circuits in the wiring.
