What causes the Roewe RX5 to have no response when jump-starting?
4 Answers
The reasons why the Roewe RX5 has no power when jump-starting may be due to oxidation of the battery's positive terminal causing poor contact, or issues with the negative terminal grounding. Below are the relevant explanations: 1. Jump-starting: Contacting a rescue vehicle, connecting the jumper cables, and temporarily charging through the rescue vehicle to start the engine is the correct approach. To prevent being unable to charge when the car battery is dead, owners should keep a set of jumper cables in the car. 2. Towing to start: In the absence of jumper cables, pushing the car or towing to start is the most familiar and effective emergency starting method. However, this should not be used frequently as it can cause certain damage to the engine and clutch. Especially for automatic transmission vehicles, this method should be avoided.
I think the Roewe RX5 has no response after jump-starting, possibly due to the battery or incorrect jump-start operation. If your battery is aged or severely depleted, even after jump-starting, it may not provide sufficient power to start the vehicle. Poor cable contact or reversed polarity during connection can cause a short circuit, instantly blowing a fuse and paralyzing the entire vehicle's electrical system. Additionally, unstable voltage during jump-starting can easily trigger the anti-theft system or lock the electronic control unit, causing the system to become completely unresponsive. It's recommended to first use a multimeter to check if the battery voltage is normal and ensure the jumper cables are securely connected to the correct terminals. Avoid multiple starting attempts to prevent damage to other components. In such cases, it's best to have a professional repair shop inspect the battery condition and the entire power supply circuit to avoid potential safety hazards from a roadside breakdown.
I suspect it might be caused by a blown main fuse. During jump-starting, if the current is too high or the connection is improper, that fuse will melt to protect the circuit, resulting in a complete power loss in the vehicle. The fuse box of the Roewe RX5 is usually located under the driver's seat or in the engine compartment. You can open it to check for any signs of blackening. Also, inspect whether the cable connections are loose or corroded, as this can prevent current flow and cause the system to crash. Sometimes, a sudden voltage surge during jump-starting can also damage the relay or cause the ignition switch to malfunction, leading to a total system failure. Don't attempt to fix it blindly yourself. First, try replacing the fuse with a new one. If there's still no response, you'll need to visit a 4S dealership to have the circuits checked with specialized tools, ensuring safety comes first.
I suspect the issue might lie with a faulty main fuse or relay. After jump-starting, if the relay contacts are burnt out or the main fuse is blown, current cannot be transmitted to the vehicle's entire electronic system, resulting in no response. The starting relay in the Roewe RX5 is typically connected to the ignition system – if it fails, the entire system becomes paralyzed. Additionally, a loose or corroded ground wire can cause the same issue by interrupting the circuit. I recommend checking the relay's condition and giving it a gentle tap; sometimes this can temporarily restore function, but it's best to replace it promptly.
