Parts for your 2014 Lexus Is-Gas struts

2014 Lexus IS Gas Struts (Bonnet Support Dampers)

Based on technical references including the Toyota/Lexus Service Information (TIS) repair manual for the 2014 Lexus IS (XE30) and the Lexus Electronic Parts Catalogue, this model uses gas-charged bonnet support dampers (gas struts) to hold the bonnet open. The sedan’s boot lid is sprung via torsion bars rather than gas struts. So for a 2014 Lexus IS, gas struts are relevant to the bonnet, not the boot.

On the 2014 Lexus IS, the bonnet gas struts do the heavy lifting so owners don’t have to. They’re nitrogen-charged dampers that counterbalance the bonnet’s weight and keep it safely propped while someone’s checking fluids, swapping an air filter, or chasing down a rattle. When they’re healthy, the bonnet rises smoothly and stays put, when they’re tired, it can sag, drop, or need a shoulder to keep it up—never ideal.

As part of regular servicing, a quick check takes seconds and can save grief. Open the bonnet and note the effort needed, the speed of lift, and whether it holds steady in the top position. Any hesitation, uneven movement, oily film on the shaft, or a bonnet that creeps down means the struts are on the way out. In Aussie and Kiwi climates—especially with hot summers—gas struts often lose charge after 5–10 years or around 100–200,000 km, so the 2014 IS is right in the window where replacement is common.

Replacement is straightforward with basic tools, though a second set of hands is smart. Always support the bonnet with a prop or helper before unclipping a strut. Most units are non-serviceable and not designed to be re-gassed, the fix is to replace them as a pair for even performance. Quality OE-equivalent dampers will restore the factory feel and reduce stress on hinges. After fitting, cycle the bonnet a few times to confirm smooth action and secure clip engagement.

Care tips that help struts last: keep the chrome shafts clean, avoid force-closing the bonnet, and don’t use the struts to lever or align panels. If the bonnet’s been resprayed or fitted with accessories that change weight, choose struts matched to the new mass. Given these are safety-related, any sign of the bonnet not holding should move replacement to the top of the to-do list.

• Typical failure signs: bonnet dropping, slow lift, squeaks, or visible oiling.
• Best practice: replace in pairs, verify clips are seated, and recycle old pressurised struts responsibly.

FAQs

Do 2014 Lexus IS sedans have gas struts on the boot?
Not on the boot. The XE30 sedan uses torsion bars for the boot lid. Gas struts are fitted to the bonnet to hold it open during servicing.

How long do the bonnet gas struts last on a 2014 IS?
In local conditions, many sets last 5–10 years. Heat, mileage, and how often the bonnet’s used can shorten that. If the bonnet won’t stay up or needs a shove to lift, it’s time to replace.

Can these gas struts be re-gassed, or do they need replacing?
They’re generally sealed and not serviceable. The reliable fix is to replace the pair with quality OE-spec units. It’s a quick job, but support the bonnet while swapping them.